Professor David Smith FRS

Title: Professor of Chemical Physics

Fellow of the Royal Society
B.A. (Keele, 1959), Ph.D., D.Sc. (Birmingham, 1962), Hon.D.Sc.(Keele, 1990), F.Inst.P., C.Phys.
Phone: +44 (0)1782 674383
Email: d.smith@keele.ac.uk
Location: Institute for Science & Technology in Medicine, Keele University,
Guy Hilton Research Centre, Thornburrow Drive, Hartshill, Stoke-on-Trent ST4 7QB United Kingdom
Role: ISTM Research theme: Healthcare Technologies
Contacting me: By phone or email please
Prof David Smith

David Smith obtained a BA joint honours degree in physics and chemistry at Keele University and PhD and DSc degrees at Birmingham University where he was awarded a Personal Chair in Chemical Physics in 1984. He conceived and developed the selected ion flow tube (SIFT) and flowing afterglow Langmuir probe (FALP) techniques which are now widely used for the study of reaction processes in ionised gases. He has made major contributions to the physics and chemistry of the terrestrial atmosphere and interstellar clouds.

In 1973 David Smith was elected Fellow of the Institute of Physics London and in 1988 a Fellow of the Royal Society. In 1990 he was awarded a DSc (Honoris Causa) by the University of Keele.

Following the period 1991 – 1995 at the Institute for Ion Physics at the University of Innsbruck, Austria as University Professor, he moved to the School of Medicine at Keele University to apply the SIFT and FALP methods (developed as the SIFT-MS and FA-MS analytical techniques) to the trace gas analysis of air and breath, with special reference to the quantification of metabolites in human breath for clinical diagnosis and therapeutic monitoring, and to biological and environmental monitoring and health and safety practice.

David Smith is now a world leader in the growing topic of breath analysis following close productive collaborations with clinicians at the Royal Stoke University Hospital, part of the University Hospital of North Midlands (UHNM) NHS Trust.

In 2001, with others, he founded Trans Spectra Limited, a research and development consultancy company dedicated to the commercial development of the SIFT-MS and FA-MS analytical methods.

David Smith is currently co-author of some 350 research and review papers and co-editor of the text: Breath Analysis for Clinical Diagnosis and Therapeutic Monitoring, A. Amann, D. Smith (Eds.), World Scientific, Singapore, 2005.

ISTM Research theme: Healthcare Technologies

Research Interests:

Physics and chemistry of ionised gases with special reference to ion-molecule reaction.

Development of analytical instruments that exploit gas phase ionic reactions for the analysis of trace gases in air (for environmental monitoring) and breath analysis (for non-invasive clinical diagnosis and therapeutic monitoring).

Current Projects include:

(i) Quantification of metabolites in breath of patients with end-stage renal failure, pre- and post-dialysis.
(ii). Determination of total body water by measuring the deuterium content of single breath exhalations following ingestion of D2O.
(iii). Identifying and quantifying metabolites emitted by tumour cells, both in vivo and in vitro.

Selected Ion Flow Tube Mass Spectrometry, SIFT-MS

ISTM_smith_spanel_image1_720x260  

Schematic diagram of selected ion flow tube (SIFT) apparatus.

SIFT-MS has been designed and constructed to allow on-line, real time analyses of the trace gases in ambient (polluted) air, exhaled breath and the headspace of aqueous liquids. The SIFT-MS analytical method combines fast flow tube techniques and quantitative mass spectrometry. The air/breath/headspace sample is introduced into fast flowing helium carrier gas where the trace gases in the sample react with embedded reagent ions (H3O+, NO+ or O2+) to produce characteristic product ions that identify the trace gases, and accurate quantification is achieved from knowledge of the kinetics of the ion/trace gas molecule reactions. Unlike other analytical techniques, an important feature of SIFT-MS analyses is that sample collection into bags or onto traps are not required, which can compromise the sample, and time consuming calibration is unnecessary. This allows the direct analysis of single exhalations of breath and provides the scientist/clinician with immediate results. Rapid non-invasive analyses of breath can now be routinely performed in the clinical environment with minimal stress to the patients, which is new route to clinical diagnosis and therapeutic monitoring.

 

Flowing Afterglow Mass Spectrometry (FA-MS)

ISTM_smith_spanel_image2_720x340  

The principle of the FA-MS technique is similar to that of SIFT-MS in that it exploits ion chemistry coupled with fast flow tube techniques and quantitative mass spectrometry. However, FA-MS is specifically used for the on-line determination of the deuterium content of water vapour in exhaled breath and the vapour above aqueous liquids. Thus, for example, the deuterium content of single breath exhalations can be measured following the ingestion of a small known amount of deuterium oxide when, following the principle of isotope dilution, the total body water of the subject can be obtained, which is proving to be particularly useful in nephrology.
ISTM_Smith_Spanel_SIFTimages3+4_720x450  

"Meeting the Canine Challenge to Cancer Detection", news article in Spectroscopy Now, 15 July 2004. Click here to link to the page.

"Sifting through Breath for Cyanide", news article in Spectroscopy Now, 15 March 2005. Click here to link to the page.

 

Selected Publications

  • Smith D and Spanel P. 2015. The SIFT and FALP techniques; applications to ionic and electronic reactions studies and their evolution to the SIFT-MS and FA-MS analytical methods. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 377, 467-478. link> doi>
  • Amann A and Smith D (Eds.). 2013. Volatile Biomarkers: Non-Invasive Diagnosis in Physiology and Medicine. Amsterdam: Elsevier Science Bv.
  • Smith D and Spanel P. 2011. Direct, rapid quantitative analyses of BVOCs using SIFT-MS and PTR-MS obviating sample collection. TRAC-TRENDS IN ANALYTICAL CHEMISTRY, vol. 30(7), 945-959. link> doi>
  • Spaněl P and Smith D. 2011. Progress in SIFT-MS: breath analysis and other applications. Mass Spectrom Rev, vol. 30(2), 236-267. link> doi>
  • Smith D and Španěl P. 2016. Status of selected ion flow tube MS: accomplishments and challenges in breath analysis and other areas. Bioanalysis, vol. 8(11), 1183-1201. doi> link>

Full Publications List show

Books

  • Amann A and Smith D (Eds.). 2013. Volatile Biomarkers: Non-Invasive Diagnosis in Physiology and Medicine. Amsterdam: Elsevier Science Bv.
  • Amann A and Smith D. 2005. Breath Analysis for Clinical Diagnosis and Therapeutic Monitoring. Singapore: World Scientific.

Journal Articles

  • Smith D and Španěl P. 2016. Status of selected ion flow tube MS: accomplishments and challenges in breath analysis and other areas. Bioanalysis, vol. 8(11), 1183-1201. doi> link>
  • Smith D, Sovová K, Dryahina K, Doušová T, Dřevínek P, Španěl P. 2016. Breath concentration of acetic acid vapour is elevated in patients with cystic fibrosis. Journal of breath research, vol. 10(2), 021002. doi> link>
  • Zymak I, Žabka J, Polášek M, Spanel P, Smith D. 2016. A Pilot Study of Ion - Molecule Reactions at Temperatures Relevant to the Atmosphere of Titan. Origins of life and evolution of the biosphere : The journal of the International Society for the Study of the Origin of Life, 1-6. doi> link>
  • Smith D. 2016. From molecules in space to molecules in breath. Paediatr Respir Rev, vol. 17, 50-52. link> doi>
  • Gilchrist FJ, Belcher J, Jones AM, Smith D, Smyth AR, Southern KW, Španěl P, Webb AK, Lenney W. 2015. Exhaled breath hydrogen cyanide as a marker of early Pseudomonas aeruginosa infection in children with cystic fibrosis. ERJ Open Res, vol. 1(2). link> doi>
  • Mochalski P, Unterkofler K, Spanel P, Smith D, Amann A. 2015. Product ion distributions for the reactions of NO+ with some N-containing and O-containing heterocyclic compounds obtained using SRI-TOF-MS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 386, 42-46. link> doi>
  • Shestivska V, Antonowicz SS, Dryahina K, Kubišta J, Smith D, Španěl P. 2015. Direct detection and quantification of malondialdehyde vapour in humid air using selected ion flow tube mass spectrometry supported by gas chromatography/mass spectrometry. Rapid Commun Mass Spectrom, vol. 29(11), 1069-1079. link> doi>
  • Smith D, Bloor R, George C, Pysanenko A, Spanel P. 2015. Release of toxic ammonia and volatile organic compounds by heated cannabis and their relation to tetrahydrocannabinol content. ANALYTICAL METHODS, vol. 7(10), 4104-4110. link> doi>
  • Smith D and Spanel P. 2015. Pitfalls in the analysis of volatile breath biomarkers: suggested solutions and SIFT-MS quantification of single metabolites. J Breath Res, vol. 9(2), 022001. link> doi>
  • Shestivska V, Dryahina K, Nunvář J, Sovová K, Elhottová D, Nemec A, Smith D, Španěl P. 2015. Quantitative analysis of volatile metabolites released in vitro by bacteria of the genus Stenotrophomonas for identification of breath biomarkers of respiratory infection in cystic fibrosis. J Breath Res, vol. 9(2), 027104. link> doi>
  • Gilchrist FJ, Spanel P, Smith D, Lenney W. 2015. The in vitro identification and quantification of volatile biomarkers released by cystic fibrosis pathogens. ANALYTICAL METHODS, vol. 7(3), 818-824. link> doi>
  • Smith D and Spanel P. 2015. The SIFT and FALP techniques; applications to ionic and electronic reactions studies and their evolution to the SIFT-MS and FA-MS analytical methods. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 377, 467-478. link> doi>
  • Kumar S, Huang J, Abbassi-Ghadi N, Mackenzie HA, Veselkov KA, Hoare JM, Lovat LB, Španěl P, Smith D, Hanna GB. 2015. Mass Spectrometric Analysis of Exhaled Breath for the Identification of Volatile Organic Compound Biomarkers in Esophageal and Gastric Adenocarcinoma. Ann Surg, vol. 262(6), 981-990. link> doi>
  • Smith D and Španěl P. 2015. SIFT-MS and FA-MS methods for ambient gas phase analysis: developments and applications in the UK. Analyst, vol. 140(8), 2573-2591. link> doi>
  • Smith D, Chippendale TWE, Španěl P. 2014. Reactions of the selected ion flow tube mass spectrometry reagent ions H3O(+) and NO(+) with a series of volatile aldehydes of biogenic significance. Rapid Commun Mass Spectrom, vol. 28(17), 1917-1928. link> doi>
  • Mochalski P, Unterkofler K, Španěl P, Smith D, Amann A. 2014. Product ion distributions for the reactions of NO(+) with some physiologically significant volatile organosulfur and organoselenium compounds obtained using a selective reagent ionization time-of-flight mass spectrometer. Rapid Commun Mass Spectrom, vol. 28(15), 1683-1690. link> doi>
  • Chippendale TWE, Španěl P, Smith D, El Haj AJ. 2014. Counting cell number in situ by quantification of dimethyl sulphide in culture headspace. Analyst, vol. 139(19), 4903-4907. link> doi>
  • Mochalski P, Unterkofler K, Španěl P, Smith D, Amann A. 2014. Product ion distributions for the reactions of NO(+) with some physiologically significant aldehydes obtained using a SRI-TOF-MS instrument. Int J Mass Spectrom, vol. 363, 23-31. link> doi>
  • Smith D, Španěl P, Herbig J, Beauchamp J. 2014. Mass spectrometry for real-time quantitative breath analysis. J Breath Res, vol. 8(2), 027101. link> doi>
  • Davies SJ, Španěl P, Smith D. 2014. Breath analysis of ammonia, volatile organic compounds and deuterated water vapor in chronic kidney disease and during dialysis. Bioanalysis, vol. 6(6), 843-857. link> doi>
  • Chippendale TWE, Gilchrist FJ, Spanel P, Alcock A, Lenney W, Smith D. 2014. Quantification by SIFT-MS of volatile compounds emitted by Aspergillus fumigatus cultures and in co-culture with Pseudomonas aeruginosa, Staphylococcus aureus and Streptococcus pneumoniae. ANALYTICAL METHODS, vol. 6(20), 8154-8164. link> doi>
  • Chippendale TWE, Gilchrist FJ, Spanel P, Alcock A, Lenney W, Smith D. 2014. Quantification by SIFT-MS of volatile compounds emitted by in vitro cultures of S. aureus, S. pneumoniae and H. influenzae isolated from patients with respiratory diseases. ANALYTICAL METHODS, vol. 6(8), 2460-2472. link> doi>
  • Smith D, Spanel P, Gilchrist FJ, Lenney W. 2013. Hydrogen cyanide, a volatile biomarker of Pseudomonas aeruginosa infection. JOURNAL OF BREATH RESEARCH, vol. 7(4), Article ARTN 044001. link> doi>
  • Spanel P and Smith D. 2013. Advances in On-line Absolute Trace Gas Analysis by SIFT-MS. CURRENT ANALYTICAL CHEMISTRY, vol. 9(4), 525-539. link>
  • Davies SJ, Engel B, Chan C, Tan BK, Yu Z, Asghar R, John B, Spanel P, Smith D. 2013. Breath Analysis and the Measurement of Total Body Water Using Isotope Dilution - Applications in the Dialysis Clinic. CURRENT ANALYTICAL CHEMISTRY, vol. 9(4), 593-599. link>
  • Smith D, Chippendale TWE, Spanel P. 2013. Minimising the Effects of Isobaric Product Ions in SIFT-MS Quantification of Acetaldehyde, Dimethyl Sulphide and Carbon Dioxide. CURRENT ANALYTICAL CHEMISTRY, vol. 9(4), 550-557. link>
  • Spanel P and Smith D. 2013. Selected Ion Flow Tube Mass Spectrometry, SIFT-MS. CURRENT ANALYTICAL CHEMISTRY, vol. 9(4), 523-524. link>
  • Smith D, Chippendale TWE, Dryahina K, Spanel P. 2013. SIFT-MS Analysis of Nose-Exhaled Breath; Mouth Contamination and the Influence of Exercise. CURRENT ANALYTICAL CHEMISTRY, vol. 9(4), 565-575. link>
  • Dryahina K, Spanel P, Pospisilova V, Sovova K, Hrdlicka L, Machkova N, Lukas M, Smith D. 2013. Quantification of pentane in exhaled breath, a potential biomarker of bowel disease, using selected ion flow tube mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 27(17), 1983-1992. link> doi>
  • Gilchrist FJ, Sims H, Alcock A, Jones AM, Bright-Thomas RJ, Smith D, Spanel P, Webb AK, Lenney W. 2013. Is Hydrogen Cyanide a Marker of Burkholderia cepacia Complex?. JOURNAL OF CLINICAL MICROBIOLOGY, vol. 51(11), 3849-3851. link> doi>
  • Gilchrist FJ, Bright-Thomas RJ, Jones AM, Smith D, Spanel P, Webb AK, Lenney W. 2013. Hydrogen cyanide concentrations in the breath of adult cystic fibrosis patients with and without Pseudomonas aeruginosa infection. JOURNAL OF BREATH RESEARCH, vol. 7(2), Article ARTN 026010. link> doi>
  • Kumar S, Huang J, Abbassi-Ghadi N, Spanel P, Smith D, Hanna GB. 2013. Selected Ion Flow Tube Mass Spectrometry Analysis of Exhaled Breath for Volatile Organic Compound Profiling of Esophago-Gastric Cancer. ANALYTICAL CHEMISTRY, vol. 85(12), 6121-6128. link> doi>
  • Spanel P, Dryahina K, Smith D. 2013. A quantitative study of the influence of inhaled compounds on their concentrations in exhaled breath. JOURNAL OF BREATH RESEARCH, vol. 7(1), Article ARTN 017106. link> doi>
  • Huang J, Kumar S, Abbassi-Ghadi N, Spanel P, Smith D, Hanna GB. 2013. Selected Ion Flow Tube Mass Spectrometry Analysis of Volatile Metabolites in Urine Headspace for the Profiling of Gastro-Esophageal Cancer. ANALYTICAL CHEMISTRY, vol. 85(6), 3409-3416. link> doi>
  • Rutter AV, Chippendale TWE, Yang Y, Spanel P, Smith D, Sule-Suso J. 2013. Quantification by SIFT-MS of acetaldehyde released by lung cells in a 3D model. ANALYST, vol. 138(1), 91-95. link> doi>
  • Spanel P and Smith D. 2013. Account On the features, successes and challenges of selected ion flow tube mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY, vol. 19(4), 225-246. link> doi>
  • Ajibola OA, Smith D, Spaněl P, Ferns GAA. 2013. Effects of dietary nutrients on volatile breath metabolites. J Nutr Sci, vol. 2, e34. link> doi>
  • Spanel P and Smith D. 2013. On the features, successes and challenges of selected ion flow tube mass spectrometry. Eur J Mass Spectrom (Chichester), vol. 19(4), 225-246. link> doi>
  • Gilchrist FJ, Sims H, Alcock A, Belcher J, Jones AM, Smith D, Spanel P, Webb AK, Lenney W. 2012. Quantification of hydrogen cyanide and 2-aminoacetophenone in the headspace of Pseudomonas aeruginosa cultured under biofilm and planktonic conditions. ANALYTICAL METHODS, vol. 4(11), 3661-3665. link> doi>
  • Kumar S, Huang J, Cushnir JR, Španěl P, Smith D, Hanna GB. 2012. Selected ion flow tube-MS analysis of headspace vapor from gastric content for the diagnosis of gastro-esophageal cancer. Anal Chem, vol. 84(21), 9550-9557. link> doi>
  • Chippendale TWE, Hu B, El Haj AJ, Smith D. 2012. A study of enzymatic activity in cell cultures via the analysis of volatile biomarkers. Analyst, vol. 137(20), 4677-4685. link> doi>
  • Tan BK, Davies SJ, Spanel P, Smith D. 2012. Injection of deuterated water into the pulmonary/alveolar circulation; measurement of HDO in exhaled breath and implications to breath analysis. JOURNAL OF BREATH RESEARCH, vol. 6(3), Article ARTN 036005. link> doi>
  • Gilchrist FJ, Razavi C, Webb AK, Jones AM, Spaněl P, Smith D, Lenney W. 2012. An investigation of suitable bag materials for the collection and storage of breath samples containing hydrogen cyanide. J Breath Res, vol. 6(3), 036004. link> doi>
  • Shestivska V, Spaněl P, Dryahina K, Sovová K, Smith D, Musílek M, Nemec A. 2012. Variability in the concentrations of volatile metabolites emitted by genotypically different strains of Pseudomonas aeruginosa. J Appl Microbiol, vol. 113(3), 701-713. link> doi>
  • Smith D, Sovova K, Spanel P. 2012. A selected ion flow tube study of the reactions of H3O+, NO+ and O-2(+center dot) with seven isomers of hexanol in support of SIFT-MS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 319, 25-30. link> doi>
  • Chippendale TWE, Španěl P, Smith D. 2011. Time-resolved selected ion flow tube mass spectrometric quantification of the volatile compounds generated by E. coli JM109 cultured in two different media. Rapid Commun Mass Spectrom, vol. 25(15), 2163-2172. link> doi>
  • Španěl P and Smith D. 2011. Comment on 'influences of mixed expiratory sampling parameters on exhaled volatile organic compound concentrations'. J Breath Res, vol. 5(4), 048001. link> doi>
  • Spaněl P, Dryahina K, Rejšková A, Chippendale TWE, Smith D. 2011. Breath acetone concentration; biological variability and the influence of diet. Physiol Meas, vol. 32(8), N23-N31. link> doi>
  • Smith D and Spanel P. 2011. Direct, rapid quantitative analyses of BVOCs using SIFT-MS and PTR-MS obviating sample collection. TRAC-TRENDS IN ANALYTICAL CHEMISTRY, vol. 30(7), 945-959. link> doi>
  • Boshier PR, Cushnir JR, Mistry V, Knaggs A, Spanel P, Smith D, Hanna GB. 2011. On-line, real time monitoring of exhaled trace gases by SIFT-MS in the perioperative setting: a feasibility study. ANALYST, vol. 136(16), 3233-3237. link> doi>
  • Španěl P and Smith D. 2011. Volatile compounds in health and disease. Curr Opin Clin Nutr Metab Care, vol. 14(5), 455-460. link> doi>
  • Smith D, Chippendale TWE, Spanel P. 2011. Selected ion flow tube, SIFT, studies of the reactions of H3O+, NO+ and O-2(+) with some biologically active isobaric compounds in preparation for SIFT-MS analyses. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 303(2-3), 81-89. link> doi>
  • Smith D, Spanel P, Fryer AA, Hanna F, Ferns GAA. 2011. Can volatile compounds in exhaled breath be used to monitor control in diabetes mellitus?. JOURNAL OF BREATH RESEARCH, vol. 5(2), Article ARTN 022001. link> doi>
  • Smith D and Spanel P. 2011. Ambient analysis of trace compounds in gaseous media by SIFT-MS. ANALYST, vol. 136(10), 2009-2032. link> doi>
  • Olivares A, Dryahina K, Navarro JL, Smith D, Spanĕl P, Flores M. 2011. SPME-GC-MS versus Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) analyses for the study of volatile compound generation and oxidation status during dry fermented sausage processing. J Agric Food Chem, vol. 59(5), 1931-1938. link> doi>
  • Spaněl P and Smith D. 2011. Progress in SIFT-MS: breath analysis and other applications. Mass Spectrom Rev, vol. 30(2), 236-267. link> doi>
  • Gilchrist FJ, Alcock A, Belcher J, Brady M, Jones A, Smith D, Spanĕl P, Webb K, Lenney W. 2011. Variation in hydrogen cyanide production between different strains of Pseudomonas aeruginosa. Eur Respir J, vol. 38(2), 409-414. link> doi>
  • Španěl P, Shestivska V, Chippendale TWE, Smith D. 2011. Determination of the deuterium abundances in water from 156 to 10,000 ppm by SIFT-MS. J Am Soc Mass Spectrom, vol. 22(1), 179-186. link> doi>
  • John B, Tan BK, Dainty S, Spanel P, Smith D, Davies SJ. 2010. Plasma volume, albumin, and fluid status in peritoneal dialysis patients. Clin J Am Soc Nephrol, vol. 5(8), 1463-1470. link> doi>
  • Olivares A, Dryahina K, Luis Navarro J, Flores M, Smith D, Spanel P. 2010. Selected Ion Flow Tube-Mass Spectrometry for Absolute Quantification of Aroma Compounds in the Headspace of Dry Fermented Sausages. ANALYTICAL CHEMISTRY, vol. 82(13), 5819-5829. link> doi>
  • Dryahina K, Smith D, Spanel P. 2010. Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 24(9), 1296-1304. link> doi>
  • Smith D, Spanêl P, Sulé-Suso J. 2010. Advantages of breath testing for the early diagnosis of lung cancer. Expert Rev Mol Diagn, vol. 10(3), 255-257. link> doi>
  • Smith D, Pysanenko A, Spanel P. 2010. Kinetics of ethanol decay in mouth- and nose-exhaled breath measured on-line by selected ion flow tube mass spectrometry following varying doses of alcohol. Rapid Commun Mass Spectrom, vol. 24(7), 1066-1074. link> doi>
  • Tan BK, Smith D, Spanel P, Davies SJ. 2010. Dispersal kinetics of deuterated water in the lungs and airways following mouth inhalation: real-time breath analysis by flowing afterglow mass spectrometry (FA-MS). J Breath Res, vol. 4(1), 017109. link> doi>
  • Smith D, Spaněl P, Enderby B, Lenney W, Turner C, Davies SJ. 2010. Isoprene levels in the exhaled breath of 200 healthy pupils within the age range 7-18 years studied using SIFT-MS. J Breath Res, vol. 4(1), 017101. link> doi>
  • Smith D and Španěl P. 2010. Selected ion flow tube mass spectrometry, SIFT-MS; new horizons in real time air and breath analysis. Spectroscopy Europe, vol. 22, 21-24.
  • Sule-Suso J, Pysanenko A, Spanel P, Smith D. 2009. Quantification of acetaldehyde and carbon dioxide in the headspace of malignant and non-malignant lung cells in vitro by SIFT-MS. ANALYST, vol. 134(12), 2419-2425. link> doi>
  • Chan C, McIntyre C, Smith D, Spanel P, Davies SJ. 2009. Combining near-subject absolute and relative measures of longitudinal hydration in hemodialysis. Clin J Am Soc Nephrol, vol. 4(11), 1791-1798. link> doi>
  • Enderby B, Lenney W, Brady M, Emmett C, Spaněl P, Smith D. 2009. Concentrations of some metabolites in the breath of healthy children aged 7-18 years measured using selected ion flow tube mass spectrometry (SIFT-MS). J Breath Res, vol. 3(3), 036001. link> doi>
  • Dryahina K, Pehal F, Smith D, Spanel P. 2009. Quantification of methylamine in the headspace of ethanol of agricultural origin by selected ion flow tube mass spectrometry. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 286(1), 1-6. link> doi>
  • Pysanenko A, Spanel P, Smith D. 2009. Analysis of the isobaric compounds propanol, acetic acid and methyl formate in humid air and breath by selected ion flow tube mass spectrometry, SIFT-MS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 285(1-2), 42-48. link> doi>
  • Smith D, Pysanenko A, Spanel P. 2009. The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 23(10), 1419-1425. link> doi>
  • Pysanenko A, Wang T, Spanel P, Smith D. 2009. Acetone, butanone, pentanone, hexanone and heptanone in the headspace of aqueous solution and urine studied by selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 23(8), 1097-1104. link> doi>
  • Smith D, Pysanenko A, Spanel P. 2009. Ionic diffusion and mass discrimination effects in the new generation of short flow tube SIFT-MS instruments. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 281(1-2), 15-23. link> doi>
  • Enderby B, Smith D, Carroll W, Lenney W. 2009. Hydrogen Cyanide as a Biomarker for Pseudomonas Aeruginosa in the Breath of Children With Cystic Fibrosis. PEDIATRIC PULMONOLOGY, vol. 44(2), 142-147. link> doi>
  • Spanel P and Smith D. 2009. Influence of weakly bound adduct ions on breath trace gas analysis by selected ion flow tube mass spectrometry (SIFT-MS). INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 280(1-3), 128-135. link> doi>
  • Pysanenko A, Spanel P, Smith D. 2008. A study of sulfur-containing compounds in mouth- and nose-exhaled breath and in the oral cavity using selected ion flow tube mass spectrometry. JOURNAL OF BREATH RESEARCH, vol. 2(4), Article ARTN 046004. link> doi>
  • Bloor RN, Wang TS, Spanel P, Smith D. 2008. Ammonia release from heated 'street' cannabis leaf and its potential toxic effects on cannabis users. ADDICTION, vol. 103(10), 1671-1677. link> doi>
  • Chan C, Smith D, Spanel P, McIntyre CW, Davies SJ. 2008. A non-invasive, on-line deuterium dilution technique for the measurement of total body water in haemodialysis patients. NEPHROLOGY DIALYSIS TRANSPLANTATION, vol. 23(6), 2064-2070. link> doi>
  • Kushch I, Schwarz K, Schwentner L, Baumann B, Dzien A, Schmid A, Unterkofler K, Gastl G, Spaněl P, Smith D, Amann A. 2008. Compounds enhanced in a mass spectrometric profile of smokers' exhaled breath versus non-smokers as determined in a pilot study using PTR-MS. J Breath Res, vol. 2(2), 026002. link> doi>
  • Wang T, Spanel P, Smith D. 2008. Selected ion flow tube mass spectrometry of 3-hydroxybutyric acid, acetone and other ketones in the headspace of aqueous solution and urine. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 272(1), 78-85. link> doi>
  • Van Doren JM, Miller TM, Viggiano AA, Spanel P, Smith D, Bopp JC, Troe J. 2008. Experimental and theoretical investigation of electron attachment to SF(5)Cl. J Chem Phys, vol. 128(9), 094309. link> doi>
  • Smith D, Wang T, Pysanenko A, Spanel P. 2008. A selected ion flow tube mass spectrometry study of ammonia in mouth- and nose-exhaled breath and in the oral cavity. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 22(6), 783-789. link> doi>
  • Turner C, Parekh B, Walton C, Spanel P, Smith D, Evans M. 2008. An exploratory comparative study of volatile compounds in exhaled breath and emitted by skin using selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 22(4), 526-532. link> doi>
  • Wang T, Pysanenko A, Dryahina K, Španěl P, Smith D. 2008. Analysis of breath, exhaled via the mouth and nose, and the air in the oral cavity. J. Breath Res., vol. 2, 037013. doi>
  • Spanel P and Smith D. 2008. Quantification of trace levels of the potential cancer biomarkers formaldehyde, acetaldehyde and propanol in breath by SIFT-MS. JOURNAL OF BREATH RESEARCH, vol. 2(4), Article ARTN 046003. link> doi>
  • Spanel P, Dryahina K, Smith D. 2007. Microwave plasma ion sources for selected ion flow tube mass spectrometry: Optimizing their performance and detection limits for trace gas analysis. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 267(1-3), 117-124. link> doi>
  • Spanel P, Dryahina K, Smith D. 2007. Acetone, ammonia and hydrogen cyanide in exhaled breath of several volunteers aged 4-83 years. JOURNAL OF BREATH RESEARCH, vol. 1(1), Article ARTN 011001. link> doi>
  • Amann A, Spanĕl P, Smith D. 2007. Breath analysis: the approach towards clinical applications. Mini Rev Med Chem, vol. 7(2), 115-129. link> doi>
  • Španěl P, Dryahina K, Smith D. 2007. Acetone, ammonia and hydrogen cyanide in exhaled breath of several volunteers aged 4-83 years. J. Breath Res., 011001. link> doi>
  • Spanel P and Smith D. 2007. Selected ion flow tube mass spectrometry for on-line trace gas analysis in biology and medicine. EUROPEAN JOURNAL OF MASS SPECTROMETRY, vol. 13(1), 77-82. link> doi>
  • Smith D and Spanel P. 2007. The challenge of breath analysis for clinical diagnosis and therapeutic monitoring. Analyst, vol. 132(5), 390-396. link> doi>
  • Španěl P, Dryahina K, Smith D. 2007. The concentration distributions of some metabolites in the exhaled breath of young adults. J. Breath Res., 026001. link> doi>
  • Smith D, Turner C, Španěl P. 2007. Volatile metabolites in the exhaled breath of healthy volunteers: their levels and distributions. J. Breath Res., 014004. link> doi>
  • Turner C, Spanel P, Smith D. 2006. A longitudinal study of methanol in the exhaled breath of 30 healthy volunteers using selected ion flow tube mass spectrometry, SIFT-MS. Physiol Meas, vol. 27(7), 637-648. link> doi>
  • Smith D. 2006. SIFT-MS undergoes clinical trials. TRAC-TRENDS IN ANALYTICAL CHEMISTRY, vol. 25(7), VI. link>
  • Bloor RN, Spanel P, Smith D. 2006. Quantification of breath carbon disulphide and acetone following a single dose of disulfiram (Antabuse) using selected ion flow tube mass spectrometry (SIFT-MS). ADDICTION BIOLOGY, vol. 11(2), 163-169. link> doi>
  • Smith D, Wang T, Spanel P, Bloor R. 2006. The increase of breath ammonia induced by niacin ingestion quantified by selected ion flow tube mass spectrometry. Physiol Meas, vol. 27(6), 437-444. link> doi>
  • Turner C, Spanel P, Smith D. 2006. A longitudinal study of ammonia, acetone and propanol in the exhaled breath of 30 subjects using selected ion flow tube mass spectrometry, SIFT-MS. PHYSIOLOGICAL MEASUREMENT, vol. 27(4), 321-337. link> doi>
  • Julak J, Stranska E, Rosova V, Geppert H, Spanel P, Smith D. 2006. Bronchoalveolar lavage examined by solid phase microextraction, gas chromatography-mass spectrometry and selected ion flow tube mass spectrometry. JOURNAL OF MICROBIOLOGICAL METHODS, vol. 65(1), 76-86. link> doi>
  • Spanel P, Dryahina K, Smith D. 2006. A general method for the calculation of absolute trace gas concentrations in air and breath from selected ion flow tube mass spectrometry data. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 249, 230-239. link> doi>
  • Spanel P, Turner C, Wang TS, Bloor R, Smith D. 2006. Generation of volatile compounds on mouth exposure to urea and sucrose: implications for exhaled breath analysis. PHYSIOLOGICAL MEASUREMENT, vol. 27(2), N7-N17. link> doi>
  • Turner C, Spanel P, Smith D. 2006. A longitudinal study of breath isoprene in healthy volunteers using selected ion flow tube mass spectrometry (SIFT-MS). PHYSIOLOGICAL MEASUREMENT, vol. 27(1), 13-22. link> doi>
  • Turner C, Spanel P, Smith D. 2006. A longitudinal study of ethanol and acetaldehyde in the exhaled breath of healthy volunteers using selected-ion flow-tube mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 20(1), 61-68. link> doi>
  • Kubista J, Spanel P, Dryahina K, Workman C, Smith D. 2006. Combined use of gas chromatography and selected ion flow tube mass spectrometry for absolute trace gas quantification. Rapid Commun Mass Spectrom, vol. 20(4), 563-567. link> doi>
  • Chan C, Smith D, Spanel P, McIntyre C, Davies S. 2006. Deuterium kinetics in haemodialysis patients and the optimal time schedule for breath sampling in the determination of total body water (TBW) using flowing afterglow mass spectrometry (FAMS). NEPHROLOGY DIALYSIS TRANSPLANTATION, vol. 21, 422. link>
  • Smith D, Ismail KMK, Diskin AM, Chapman G, Magnay JL, Spanel P, O'Brien S. 2006. Increase of acetone emitted by urine in relation to ovulation. Acta Obstet Gynecol Scand, vol. 85(8), 1008-1011. link> doi>
  • Wang TS, Carroll W, Lenny W, Boit P, Smith D. 2006. The analysis of 1-propanol and 2-propanol in humid air samples using selected ion flow tube mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 20(2), 125-130. link> doi>
  • Smith D and Spanel P. 2005. Selected ion flow tube mass spectrometry (SIFT-MS) for on-line trace gas analysis. MASS SPECTROMETRY REVIEWS, vol. 24(5), 661-700. link> doi>
  • Spanel P, Wang TS, Smith D. 2005. Coordinated FA-MS and SIFT-MS analyses of breath following ingestion of D2O and ethanol: total body water, dispersal kinetics and ethanol metabolism. PHYSIOLOGICAL MEASUREMENT, vol. 26(4), 447-457. link> doi>
  • Carroll W, Lenney W, Wang TS, Spanel P, Alcock A, Smith D. 2005. Detection of volatile compounds emitted by Pseudomonas aeruginosa using selected ion flow tube mass spectrometry. PEDIATRIC PULMONOLOGY, vol. 39(5), 452-456. link> doi>
  • Asghar RB, Diskin AM, Spanel P, Smith D, Davies SJ. 2005. Influence of convection on the diffusive transport and sieving of water and small solutes across the peritoneal membrane. JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY, vol. 16(2), 437-443. link> doi>
  • Wang TS, Spanel P, Smith D. 2004. A selected ion flow tube study of the reactions of H3O+, NO+ and O-2(+center dot) with some phenols, phenyl alcohols and cyclic carbonyl compounds in support of SIFT-MS and PTR-MS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 239(2-3), 139-146. link> doi>
  • Wang TS, Spanel P, Smith D. 2004. A selected ion flow tube, SIFT, study of the reactions of H3O+, NO+ and O-2(center dot+) ions with several N- and O-containing heterocyclic compounds in support of SIFT-MS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 237(2-3), 167-174. link> doi>
  • Spanel P, Hall EFH, Workman CT, Smith D. 2004. A directly coupled monolithic rectangular resonator forming a robust microwave plasma ion source for SIFT-MS. PLASMA SOURCES SCIENCE & TECHNOLOGY, vol. 13(2), 282-284. link> doi>
  • Wang TS, Smith D, Spanel P. 2004. Selected ion flow tube, SIFT, studies of the reactions of H-3,O+ NO+ and O-2(+) with compounds released by Pseudomonas and related bacteria. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 233(1-3), 245-251. link> doi>
  • CHENG P, CHU YN, ZHANG WJ, SPANEL P, SMITH D. 2004. Analysis of exhaust gas from a car using selected ion flow tube mass spectrometry. Chinese Journal of Analytical Chemistry.
  • SMITH D, Engel B, Spanel P, Diskin A, Davies SJ. 2004. Longitudinal measurements of total body water and body composition in healthy volunteers by online breath deuterium measurement and other near-subject methods. International Journal of Body Composition Research, vol. 2(3), 99-106.
  • Smith D, Spanel P, Dabill D, Cocker J, Rajan B. 2004. On-line analysis of diesel engine exhaust gases by selected ion flow tube mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 18(23), 2830-2838. link> doi>
  • SPANEL P, WANG T, SMITH D. 2004. Quantification of hydrogen cyanide in humid air by selected ion flow tube mass spectrometry. Rapid Communications in Mass Spectrometry. doi>
  • Asghar RB, Diskin AM, Spanel P, Smith D, Davies SJ. 2003. Measuring transport of water across the peritoneal membrane. Kidney Int, vol. 64(5), 1911-1915. link> doi>
  • Wang TS, Spanel P, Smith D. 2003. Selected ion flow tube, SIFT, studies of the reactions of H3O+, NO+ and O2(+) with eleven C10H16 monoterpenes. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 228(1), 117-126. link> doi>
  • Diskin AM, Spanel P, Smith D. 2003. Increase of acetone and ammonia in urine headspace and breath during ovulation quantified using selected ion flow tube mass spectrometry. PHYSIOLOGICAL MEASUREMENT, vol. 24(1), 191-199. link> doi>
  • Diskin AM, Spanel P, Smith D. 2003. Time variation of ammonia, acetone, isoprene and ethanol in breath: a quantitative SIFT-MS study over 30 days. Physiol Meas, vol. 24(1), 107-119. link> doi>
  • Smith D, Wang TS, Spanel P. 2003. A SIFT study of the reactions of H2ONO+ ions with several types of organic molecules. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 230(1), 1-9. link> doi>
  • Spanel P, Diskin AM, Wang T, Smith D. 2003. A SIFT study of the reactions of H3O+, NO+ and O-2(+) with hydrogen peroxide and peroxyacetic acid. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 228(2-3), 269-283. link> doi>
  • Smith D, Wang T, Spanĕl P. 2003. Analysis of ketones by selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 17(23), 2655-2660. link> doi>
  • Cheng P, Zhang WJ, Chu YN, Spanel P, Smith D. 2003. Analysis of petrol and diesel vapor using selective ion flow tube mass spectrometry. Chinese Journal of Mass Spectrometry.
  • Smith D, Wang T, Sule-Suso J, Spanel P, El Haj AJ. 2003. Quantification of acetaldehyde released by lung cancer cells in vitro using selected ion flow tube mass spectrometry. Rapid Communcations Mass Spectometry, vol. 17(8), 845-850. doi>
  • Abbott SM, Elder JB, Spanel P, Smith D. 2003. Quantification of acetonitrile in exhaled breath and urinary headspace using selected ion flow tube mass spectrometry. International Journal of Mass Spectrometry, vol. 228(2-3), 655-665. doi>
  • Trunec D, Spanel P, Smith D. 2003. The influence of electon-electron collisions on electron thermalisation in He and Ar afterglow plasmas. Chemical Physics Letters. doi>
  • Smith D, Engel B, Diskin AM, Spanel P, Davies SJ. 2002. Comparative measurements of total body water in healthy volunteers by online breath deuterium measurement and other near-subject methods. Am J Clin Nutr, vol. 76(6), 1295-1301. link>
  • Asghar RB, Diskin AM, Spanel P, Smith D, Davies SJ. 2002. Diffusion of water across the peritoneal membrane. JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY, vol. 13, 199A. link>
  • Smith D, Wang TS, Spanel P. 2002. On-line, simultaneous quantification of ethanol, some metabolites and water vapour in breath following the ingestion of alcohol. PHYSIOLOGICAL MEASUREMENT, vol. 23(3), 477-489. link> doi>
  • Diskin AM, Wang TS, Smith D, Spanel P. 2002. A selected ion flow tube (SIFT), study of the reactions of H3O+, NO+ and O-2(+) ions with a series of alkenes; in support of SIFT-MS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 218(1), 87-101. link> doi>
  • Cheng P, Wang HM, Li JQ, Zhang WJ, Ji YF, Wang ZY, Sheng LS, Spanel P, Smith D, Cao DZ, Chu YN. 2002. Ion Formation in Microwave Discharge through Moist Air. Acta Physico-Chimica Sinica. doi>
  • Spanel P, Van Doren JM, Smith D. 2002. A selected ion flow tube study of the reactions of H(3)O(+), NO(+), and O(2)(+) with saturated and unsaturated aldehydes and subsequent hydration of the product ions. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 213(2-3), 163-176. link> doi>
  • Spanel P, Wang TS, Smith D. 2002. A selected ion flow tube, SIFT, study of the reactions of H3O+, NO+ and O-2(+) ions with a series of diols. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 218(3), 227-236. link> doi>
  • Smith D, Cheng P, Spanel P. 2002. Analysis of petrol and diesel vapour and vehicle engine exhaust gases using selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 16(11), 1124-1134. link> doi>
  • Smith D, Wang T, Spanel P. 2002. Kinetics and isotope patterns of ethanol and acetaldehyde emissions from yeast fermentations of glucose and glucose-6,6-d2 using selected ion flow tube mass spectrometry: a case study. Rapid Commun Mass Spectrom, vol. 16(1), 69-76. link> doi>
  • Trunec D, Spanel P, Smith D. 2002. Monte Carlo simulations of the influence of ion-neutral collisions on the ion currents collected by electrostatic probes. Contributions to Plasma Physics. doi>
  • Spanel P, Diskin AM, Abbott SM, Wang T, Smith D. 2002. Quantification of volatile compounds in the headspace of aqueous liquids using selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 16(22), 2148-2153. link> doi>
  • Wang T, Smith D, Spanel P. 2002. Selected ion flow studies of the reactions of H30+, NO+ and O2+ with the anaesthetic gases, Halothane, isoflurane and sevoflurane. Rapid Communications in Mass Spectrometry. doi>
  • Spanel P and Smith D. 2001. Quantitative selected ion flow tube mass spectrometry: the influence of ionic diffusion and mass discrimination. J Am Soc Mass Spectrom, vol. 12(7), 863-872. link> doi>
  • Dewhurst R J, Evans RT, Spanel P, Smith D. 2001. Assessment of Rumen Processes using selected-ion-flow-tube mass spectrometric analysis of rumen gases. Dairy Science, 1438-1444. doi>
  • Davies S, Spanel P, Smith D. 2001. A new 'online' method to measure increased exhaled isoprene in end-stage renal failure. NEPHROLOGY DIALYSIS TRANSPLANTATION, vol. 16(4), 836-839. link> doi>
  • Spanel P and Smith D. 2001. Product ion distributions and rate cO efficients fo the attachment reations of electrons with CHC12Br, CC12Bd2, and CHC1Br2. International Journal of Mass Spectrometry, 243-252. doi>
  • Spanel P and Smith D. 2001. Accuracy and precision of flowing afterglow mass spectrometry for the determination of the deuterium abundance in the headspace of aqueous liquids and exhaled breath water. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 15(11), 867-872. link> doi>
  • Smith D, Diskin AM, Ji YF, Spanel P. 2001. Concurrent use of H3O+, NO+, and O-2(+) precursor ions for the detection and quantification of diverse trace gases in the presence of air and breath by selected ion-flow tube mass spectrometry. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 209(1), 81-97. link> doi>
  • Smith D and Spanel P. 2001. On-line determination of the deuterium abundance in breath water vapour by flowing afterglow mass spectrometry with applications to measurements of total body water. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 15(1), 25-32. link> doi>
  • Spanel P and Smith D. 2001. On-line measurement of the absolute humidity of air, breath and liquid headspace samples by selected ion flow tube mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 15(8), 563-569. link> doi>
  • Davies S, Spanel P, Smith D. 2001. Rapid measurement of deuterium content of breath following oral ingestion to determine body water. PHYSIOLOGICAL MEASUREMENT, vol. 22(4), 651-659. link> doi>
  • Smith D, Spanel P, Jones JB. 2000. Analysis of volatile emissions from porcine faeces and urine using selected ion flow tube mass spectrometry. BIORESOURCE TECHNOLOGY, vol. 75(1), 27-33. link> doi>
  • Spanel P and Smith D. 2000. Selected ion flow tube mass spectrometry analyses of stable isotopes in water: isotopic composition of H3O+ and H3O+ (H2O)3 ions in exchange reactions with water vapor. J Am Soc Mass Spectrom, vol. 11(10), 866-875. link> doi>
  • Smith D, Suzor-Weiner A, Larsson M, Spanel P, Mitchell JBA. 2000. Experimental studies of the dissociative recombination of H-3(+) - Discussion. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, vol. 358(1774), 2443-2444. link>
  • Spanel P, Davies S, Smith D. 2000. Breath ammonia dips after feeding independently of the protein content of the meat. FASEB JOURNAL, vol. 14(4), A490. link>
  • Smith D, Davies S, Spanel P. 2000. SIFT-MS analysis of breath isoprene: a marker of treatment stress in haemodialysis patients?. FASEB JOURNAL, vol. 14(4), A573. link>
  • Spanel P and Smith D. 2000. An investigation of the reactions of H3O+ and O2+ with NO, NO2, N2O and HNO2 in support of selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 14(8), 646-651. link> doi>
  • Spanel P and Smith D. 2000. Influence of water vapour on selected ion flow tube mass spectrometric analyses of trace gases in humid air and breath. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 14(20), 1898-1906. link> doi>
  • Spanel P and Smith D. 2000. Quantification of hydrogen sulphide in humid air by selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 14(13), 1136-1140. link> doi>
  • Smith D, Spanel P, Davies S. 1999. Trace gases in breath of healthy volunteers when fasting and after a protein-calorie meal: a preliminary study. J Appl Physiol (1985), vol. 87(5), 1584-1588. link>
  • Fairley DA, Milligan DB, Freeman CG, McEwan MJ, Spanel P, Smith D. 1999. Competitive association and charge transfer in the reactions of NO+ with some ketones: a selected ion flow drift tube study. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 193(1), 35-43. link> doi>
  • Spanel P and Smith D. 1999. Selected ion flow tube studies of the reactions of H3O+, NO+, and O-2(+) with several aromatic and aliphatic monosubstituted halocarbons. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 189(2-3), 213-223. link> doi>
  • Spanel P and Smith D. 1999. Selected ion flow tube studies of the reactions of H3O+, NO+, and O-2(+) with eleven amine structural isomers of C5H13N. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 185, 139-147. link> doi>
  • Spanel P and Smith D. 1999. Selected ion flow tube studies of the reactions of H3O+, NO+, and O-2(+) with some chloroalkanes and chloroalkenes. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 184(2-3), 175-181. link> doi>
  • Spanel P, Smith D, Holland TA, Al Singary W, Elder JB. 1999. Analysis of formaldehyde in the headspace of urine from bladder and prostate cancer patients using selected ion flow tube mass spectrometry. Rapid Commun Mass Spectrom, vol. 13(14), 1354-1359. link> doi>
  • Spanel P, Davies S, Smith D. 1999. Quantification of breath isoprene using the selected ion flow tube mass spectrometric analytical method. Rapid Commun Mass Spectrom, vol. 13(17), 1733-1738. link> doi>
  • Spanel P and Smith D. 1999. Selected ion flow tube - Mass spectrometry: Detection and real-time monitoring of flavours released by food products. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 13(7), 585-596. link> doi>
  • Smith D, Spanel P, Holland TA, Al Singari W, Elder JB. 1999. Selected ion flow tube mass spectrometry of urine headspace. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 13(8), 724-729. link> doi>
  • Spanel P and Smith D. 1998. Selected ion flow tube studies of the reactions of H3O+ NO+, and O-2(+) with several aromatic and aliphatic hydrocarbons. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 181, 1-10. link> doi>
  • Spanel P and Smith D. 1998. The influences of gas and electron temperatures on electron attachment in gas electrical discharges. CZECHOSLOVAK JOURNAL OF PHYSICS, vol. 48(10), 1119-1134. link> doi>
  • Smith D. 1998. The mass spectrometer in medicine. Breath analysis - A new means of medical diagnosis. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, vol. 216, U413. link>
  • Spanel P and Smith D. 1998. Selected ion flow tube studies of the reactions of H3O+, NO+ and O-2(+) with several amines and some other nitrogen-containing molecules. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 176(3), 203-211. link> doi>
  • Spanel P and Smith D. 1998. Selected ion flow tube studies of the reactions of H3O+, NO+ and O-2(+) with some organosulphur molecules. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 176(3), 167-176. link> doi>
  • Spanel P and Smith D. 1998. SIFT studies of the reaction of H3O+, NO+ and O-2(+) with several ethers. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 172(3), 239-247. link> doi>
  • Spanĕl P, Davies S, Smith D. 1998. Quantification of ammonia in human breath by the selected ion flow tube analytical method using H30+ and 02+ precursor ions. Rapid Commun Mass Spectrom, vol. 12(12), 763-766. link> doi>
  • Spanel P and Smith D. 1998. SIFT studies of the reactions of H3O+, NO+ and O-2(+) with a series of volatile carboxylic acids and esters. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 172(1-2), 137-147. link> doi>
  • Spanel P, Smith D, Matejcik S, Kiendler A, Mark TD. 1997. A coordinated flowing afterglow and crossed beam study of electron attachment to CCl(3)Br. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 167, 1-12. link> doi>
  • Spanel P and Smith D. 1997. SIFT studies of the reactions of H3O+, NO+ and O-2(+) with a series of alcohols. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 167, 375-388. link> doi>
  • Spanel P, Ji YF, Smith D. 1997. SIFT studies of the reactions of H3O+, NO+ and O-2(+) with a series of aldehydes and ketones. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 165, 25-37. link> doi>
  • Davies S, Spanel P, Smith D. 1997. Quantitative analysis of ammonia on the breath of patients in end-stage renal failure. Kidney Int, vol. 52(1), 223-228. link> doi>
  • Spanel P, Cocker J, Rajan B, Smith D. 1997. Validation of the SIFT technique for trace gas analysis of breath using the syringe injection technique. ANNALS OF OCCUPATIONAL HYGIENE, vol. 41(3), 373-382. link> doi>
  • Scott GB, Fairley DA, Freeman CG, McEwan MJ, Spanel P, Smith D. 1997. Gas phase reactions of some positive ions with atomic and molecular hydrogen at 300 K. JOURNAL OF CHEMICAL PHYSICS, vol. 106(10), 3982-3987. link> doi>
  • Spanĕl P, Rolfe P, Rajan B, Smith D. 1996. The selected ion flow tube (SIFT)--a novel technique for biological monitoring. Ann Occup Hyg, vol. 40(6), 615-626. link> doi>
  • Smith D and Spanel P. 1996. Electron attachment to C-60 and C-70 in the gas phase. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, vol. 29(21), 5199-5212. link> doi>
  • Spanel P and Smith D. 1996. Selected ion flow tube: A technique for quantitative trace gas analysis of air and breath. MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, vol. 34(6), 409-419. link> doi>
  • Davies SJ, Spanel P, Smith D. 1996. Quantitative analysis of metabolites on the breath of patients in renal failure. JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY, vol. 7(9), A0352. link>
  • Spanel P and Smith D. 1996. Radiation from the reactions of NO+ with Cl- and I-. CHEMICAL PHYSICS LETTERS, vol. 258(3-4), 477-484. link> doi>
  • Smith D and Spanel P. 1996. Application of ion chemistry and the SIFT technique to the quantitative analysis of trace gases in air and on breath. INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY, vol. 15(1), 231-271. link> doi>
  • Spanel P and Smith D. 1996. A selected ion flow tube study of the reactions of NO+ and O-2(+) ions with some organic molecules: The potential for trace gas analysis of air. JOURNAL OF CHEMICAL PHYSICS, vol. 104(5), 1893-1899. link>
  • Smith D and Spanel P. 1996. The novel selected-ion flow tube approach to trace gas analysis of air and breath. RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 10(10), 1183-1198. link> doi>
  • SPANEL P and SMITH D. 1995. REACTIONS OF HYDRATED HYDRONIUM IONS AND HYDRATED HYDROXIDE IONS, WITH SOME HYDROCARBONS AND OXYGEN-BEARING ORGANIC-MOLECULES. JOURNAL OF PHYSICAL CHEMISTRY, vol. 99(42), 15551-15556. link> doi>
  • Španěl P, Pavlik M, Smith D. 1995. Reactions of H3O+ and OH- ions with some organic-molecules - applications to trace gas-analysis in air. Int. J. Mass Spectom. Ion Process., vol. 145, 177-186. doi>
  • Španěl P, Matejcik S, Smith D. 1995. The varying influences of gas and electron temperatures on the rates of electron-attachment to some selected molecules. J. Phys. B-At. Mol. Opt. Phys., vol. 28, 2941-2957. doi>
  • Smith D, Španěl P, Matejcik S, Stamatovic A, Mark TD, Jaffke T, Illenberger E. 1995. Formation of SF5- in electron-attachment to SF6- swarm and beam results reconciled. Chem. Phys. Lett., vol. 240, 481-488. doi>
  • Smith D and Spanel P. 1995. Ions in the terrestrial atmosphere and in interstellar clouds. MASS SPECTROMETRY REVIEWS, vol. 14(4-5), 255-278. link> doi>
  • SPANEL P, SMITH D, HENCHMAN M. 1995. THE REACTIONS OF SOME INTERSTELLAR IONS WITH BENZENE, CYCLOPROPANE AND CYCLOHEXANE. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 141(2), 117-126. link> doi>
  • Matejcik S, Mark TD, Španěl P, Smith D, Jaffke T, Illenberger E. 1995. Formation and decay of C60- following free-electron capture by C60. J. Chem. Phys., vol. 102, 2516-2521.
  • Španěl P and Smith D. 1995. Recent studies of electron-attachment and electron-ion recombination at thermal energies. Plasma Sources Sci. Technol., vol. 4, 302-306. doi>
  • Španěl P, Smith D, Chudacek O, Kudrna P, Tichy M. 1995. The influence of collisions in the space-charge sheath on the ion current collected by a langmuir probe. Contrib. Plasma Phys., vol. 35, 3-14. doi>
  • Trunec D, Španěl P, Smith D. 1995. The influence of ion-neutral collisions in the plasma sheath on the ion current to an electrostatic-probe - monte-carlo simulation. Contrib. Plasma Phys., vol. 35, 203-212. doi>
  • SPANEL P and SMITH D. 1994. A STUDY OF ELECTRON-ATTACHMENT TO C-70 USING THE FALP TECHNIQUE. CHEMICAL PHYSICS LETTERS, vol. 229(3), 262-266. link> doi>
  • Španěl P and Smith D. 1994. A study of electron-attachment to C70 using the FALP technique. Chem. Phys. Lett., vol. 229, 262-266.
  • Glosik J, Skalsky V, Praxmarer C, Smith D, Freysinger W, Lindinger W. 1994. Dissociation of Kr2+, N2Ar+, CO2+, CH5+, and C2H5+ ions drifting in He. vol. 101, 3792-3801.
  • Trunec D, Španěl P, Smith D. 1994. Electron-temperature relaxation in afterglow plasmas - diffusion cooling. Contrib. Plasma Phys., vol. 34, 69-79. doi>
  • Jaffke T, Illenberger E, Lezius M, Matejcik S, Smith D, Mark TD. 1994. Formation of C60- and C70- by free-electron capture - activation-energy and effect of the internal energy on lifetime. vol. 226, 213-218. doi>
  • Smith D and Španěl P. 1994. Studies of electron-attachment at thermal energies using the Flowing Afterglow Langmuir Probe technique. Adv Atom Mol Opt Phy Adv Atom Mol Opt Phy, vol. 32, 307-343.
  • SMITH D, SPANEL P, MILLAR TJ. 1994. THE ROLE OF H+ AND H-3+ IONS IN THE DEGRADATION OF INTERSTELLAR-MOLECULES. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 266(1), 31-34. link>
  • SMITH D, GLOSIK J, SKALSKY V, SPANEL P, LINDINGER W. 1993. A FURTHER INVESTIGATION OF THE REACTION OF C2H2+ WITH H-2. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, vol. 129, 145-153. link> doi>
  • Španěl P, Dittrichova L, Smith D. 1993. FALP studies of the dissociative recombination coefficients for O2+ and NO+ within the Electron-Temperature Range 300-2000 K. Int. J. Mass Spectrom. Ion Process., vol. 129, 183-191. doi>
  • Španěl P, Tichy M, Smith D. 1993. SIFT studies of the reactions of rare-gas atomic ions with Cl2 and Br2. Int. J. Mass Spectrom. Ion Process., vol. 129, 155-162. doi>
  • SMITH D. 1993. THE FORMATION OF INTERSTELLAR-MOLECULES - THE R(O)OVER-CAPLE OF RADIATIVE ASSOCIATION. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, vol. 129, 1-15. link> doi>
  • SMITH D, SPANEL P, MARK TD. 1993. ELECTRON-ATTACHMENT TO C60 AT LOW ENERGIES. CHEMICAL PHYSICS LETTERS, vol. 213(1-2), 202-206. link> doi>
  • SMITH D and SPANEL P. 1993. DISSOCIATIVE RECOMBINATION OF H3+ - EXPERIMENT AND THEORY RECONCILED. CHEMICAL PHYSICS LETTERS, vol. 211(4-5), 454-460. link> doi>
  • Španěl P, Tichy M, Smith D. 1993. The reactions of positive and negative halogen ions with Cl2 and Br2. J. Chem. Phys., vol. 98, 8660-8666.
  • Smith D and Španěl P. 1993. Dissociative Recombination of H3+ and Some Other Interstellar Ions - a Controversy Resolved. Int. J. Mass Spectrom. Ion Process. Int J Mass Spectrom, vol. 129, 163-182. doi>
  • Španěl P and Smith D. 1993. FALP studies of electron-attachment at elevated electron temperatures - the influence of attachment on electron-energy distributions. Int. J. Mass Spectrom. Ion Process., vol. 129, 193-203. doi>
  • Lindinger W and Smith D. 1993. Pahl,Maximilian. vol. 129, R11-R12. doi>
  • Hobza P, Zahradnik R, Smith D. 1993. Reactions between H3+ and rare-gas atoms. vol. 208, 497-502. doi>
  • Glosik J, Smith D, Španěl P, Freysinger W, Lindinger W. 1993. SIFDT studies of the reactions of C+, CH+ and CH2+ with HCl and CO2, and CH3+ with HCl. Int. J. Mass Spectrom. Ion Process., vol. 129, 131-143. doi>
  • SMITH D. 1992. COLD FUSION - FORMATION OF MOLECULES IN INTERSTELLAR PLASMAS. PLASMA PHYSICS AND CONTROLLED FUSION, vol. 34(13), 1817-1824. link> doi>
  • SMITH D. 1992. THE ION CHEMISTRY OF INTERSTELLAR CLOUDS. CHEMICAL REVIEWS, vol. 92(7), 1473-1485. link> doi>
  • SMITH D, SPANEL P, MAYHEW CA. 1992. A SELECTED ION-FLOW TUBE STUDY OF THE REACTIONS OF O+, H+ AND HEH+ WITH SEVERAL MOLECULAR GASES AT 300-K. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, vol. 117(1-3), 457-473. link> doi>
  • SMITH D and SPANEL P. 1992. STUDIES OF INTERSTELLAR ION REACTIONS USING THE SIFT TECHNIQUE - ISOTOPE FRACTIONATION. ACCOUNTS OF CHEMICAL RESEARCH, vol. 25(9), 414-420. link> doi>
  • Giles K, Adams NG, Smith D. 1992. A study of the reactions of H3+, H2D+, HD2+, and D3+ with H2, HD, and D2 using a variable-temperature selected ion flow tube. vol. 96, 7645-7650. doi>
  • Herman Z and Smith D. 1992. Ion molecule reactions - introduction. vol. 92, 1471-1472. doi>
  • SMITH D, SPANEL P, BEDFORD DK. 1992. SOME REACTIONS OF THE HIGHLY POLAR ION ARH(3+). CHEMICAL PHYSICS LETTERS, vol. 191(6), 587-591. link> doi>
  • GEOGHEGAN M, ADAMS NG, SMITH D. 1991. DETERMINATION OF THE ELECTRON-ION DISSOCIATIVE RECOMBINATION COEFFICIENTS FOR SEVERAL MOLECULAR-IONS AT 300-K. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, vol. 24(10), 2589-2599. link> doi>
  • Adams NG, Herd CR, Geoghegan M, Smith D, Canosa A, Gomet JC, Rowe BR, Queffelec JL, Morlais M. 1991. Laser-induced fluorescence and vacuum ultraviolet spectroscopic studies of H-atom production in the dissociative recombination of some protonated ions. vol. 94, 4852-4857. doi>
  • HENCHMAN M, SMITH D, ADAMS NG. 1991. PROTON MOTION WITHIN PROTON-BOUND DIMERS - H3O+.H2O REVERSIBLE H2O.H3O+, NH4+.NH3 REVERSIBLE NH3.NH4+ AND CH5+.CH4 REVERSIBLE CH4.CH5+ - A KINETIC-MODEL FOR ISOTOPE-EXCHANGE REACTIONS. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, vol. 109, 105-132. link> doi>
  • Hunton DE, Viggiano AA, Morris RA, Paulson JF, Smith D, Adams NG. 1991. The O+ + CO2 reaction - new results and atmospheric implications. vol. 96, 13881-13886. doi>
  • HERBST E, GILES K, SMITH D. 1990. IS INTERSTELLAR ACETONE PRODUCED BY ION-MOLECULE CHEMISTRY. ASTROPHYSICAL JOURNAL, vol. 358(2), 468-472. link> doi>
  • Mayhew CA and Smith D. 1990. A selected ion flow tube study of the reactions of F+, Cl+, Br+ and I+ with several molecular gases at 300 K. vol. 100, 737-751. doi>
  • Smith D, Herd CR, Adams NG, Paulson JF. 1990. Formation of Br2- in the reactions of thermal electrons with some bromomethanes and bromoethanes. vol. 96, 341-346. doi>
  • Viggiano AA, Morris RA, Dale F, Paulson JF, Giles K, Smith D, Su T. 1990. Kinetic-energy, temperature, and derived rotational temperature dependences for the reactions of Kr+(2P3/2) and Ar+ with HCl. vol. 93, 1149-1157. doi>
  • Herd CR, Adams NG, Smith D. 1990. OH production in the dissociative recombination of H3O+, HCO2+, and N2OH+ - comparison with theory and interstellar implications. vol. 349, 388-392. doi>
  • Adams NG, McIntosh BJ, Smith D. 1990. Production of phosphorus-containing molecules in interstellar clouds. vol. 232, 443-446.
  • Clary DC, Dateo CE, Smith D. 1990. Rates for the reactions of open-shell ions with molecules. vol. 167, 1-6. doi>
  • Mayhew CA and Smith D. 1990. The reactions of F+ ions at thermal energies. vol. 23, 3139-3146. doi>
  • Smith SC, McEwan MJ, Giles K, Smith D, Adams NG. 1990. Unimolecular decomposition of a polyatomic ion in a variable-temperature selected-ion-flow-drift tube - experiment and theoretical interpretation. vol. 96, 77-96. doi>
  • Bedford DK and Smith D. 1990. Variable-Temperature Selected-Ion-Flow-Drift-Tube Studies of the Reactions of Ar+, Ar2+ and ArHn+ (n=1-3) Ions with H2, HD and D2 at 300 K and 80 K. vol. 98, 179-190. doi>
  • SMITH D and ADAMS NG. 1989. A BRIEF REVIEW OF INTERSTELLAR ION CHEMISTRY. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II, vol. 85, 1613-1630. link> doi>
  • Smith D, McIntosh BJ, Adams NG. 1989. A selected ion flow tube study of the reactions of the PHn+ ions (n=0 to 4) with several molecular gases at 300 K. vol. 90, 6213-6219. doi>
  • Herd CR, Smith D, Adams NG. 1989. A study of dissociative electron-attachment to CF3SO3CH3 and CF3SO3C2H5 triflate esters using the FALP apparatus. vol. 91, 177-182. doi>
  • Giles K, Adams NG, Smith D. 1989. A study of reactions of CnHm+ ions (n = 4, 5, 6 - m = 0-6) with H2 and CO at 300 K and 80 K. vol. 89, 303-317. doi>
  • Adams NG, Smith D, Tichy M, Javahery G, Twiddy ND, Ferguson EE. 1989. An absolute proton affinity scale in the approximately 130-140 kcal mol-1 range. vol. 91, 4037-4042. doi>
  • Herbst E, Smith D, Adams NG, McIntosh BJ. 1989. Association reactions - theoretical shortcomings. vol. 85, 1655-1664. doi>
  • Adams NG, Herd CR, Smith D. 1989. Development of the flowing afterglow langmuir probe technique for studying the neutral products of dissociative recombination using spectroscopic techniques - oh production in the HCO2+ + e reaction. vol. 91, 963-973. doi>
  • Herd CR, Adams NG, Smith D. 1989. FALP studies of electron-attachment reactions of C6F5Cl,C6F5Br and C6F5I. vol. 87, 331-342. doi>
  • Smith D and Adams NG. 1989. Production of dimer ions M2+ (M = CH4, H2O, COS, C2H2, C2H6, HCl, N2O and CO) in binary ion-molecule reactions. vol. 161, 30-34. doi>
  • Giles K, Adams NG, Smith D. 1989. Reactions of Kr+, Kr2+, Xe+ and Xe2+ ions with several molecular gases at 300 K. vol. 22, 873-883. doi>
  • Smith D, Herd CR, Adams NG. 1989. Studies of dissociative electron-attachment to some haloethanes using the FALP apparatus - comparisons with data obtained using non-thermal techniques. vol. 93, 15-22. doi>
  • Henchman M, Smith D, Adams NG, Paulson JF, Herman Z. 1989. The mechanism of the reaction CH4+ + CH4 -> CH5+ + CH3 as a function of energy - rate constants and product distributions for the reactions of CH4+ + CD4 and CD4+ + CH4 at 80 K and 300 K. vol. 92, 15-36. doi>
  • Adams NG, Smith D, Giles K, Herbst E. 1989. The production of CNO, HCNO, and H2CNO molecules in dense interstellar clouds. vol. 220, 269-271.
  • Simpson RW, Harland PW, Maclagan R, Smith D, Adams NG. 1989. Theoretical calculation of the HeB+ molecular ion interaction potential and the mobility of B+ ions in helium. vol. 90, 193-196. doi>
  • Smith D, Adams NG, Giles K, Herbst E. 1988. Organo-sulfur chemistry in dense interstellar clouds via S+ - hydrocarbon reactions. vol. 200, 191-194.
  • McIntosh BJ, Adams NG, Smith D. 1988. Determination of the proton affinities of H2O and CS2 relative to C2H4. vol. 148, 142-148. doi>
  • Smith D. 1988. Formation and Destruction of Molecular Ions in Interstellar Clouds. Phil. Trans. R. Soc. Lond. A, vol. 324, 257-273. doi>
  • Adams NG and Smith D. 1988. Ionic reactions in atmospheric, interstellar and laboratory plasmas. vol. 29, 559-578. doi>
  • Adams NG and Smith D. 1988. Measurements of the dissociative recombination coefficients for several polyatomic ion species at 300 K. vol. 144, 11-14. doi>
  • Rebrion C, Marquette JB, Rowe BR, Chakravarty C, Clary DC, Adams NG, Smith D. 1988. Reactions of N+ and H3+ with the structural isomers of C2H2Cl2. vol. 92, 6572-6574. doi>
  • Adams NG, Smith D, Herd CR. 1988. Studies of dissociative electron-attachment to the free-radicals CCl3 and CCl2Br using the FALP apparatus. vol. 84, 243-253. doi>
  • Smith D and Adams NG. 1988. The selected ion flow tube(SIFT): studies of ion-neutral reactions. vol. 24, 1-49.
  • ADAMS NG and SMITH D. 1987. ION CHEMISTRY - A COLLECTION OF INVITED PAPERS DEDICATED TO FERGUSON,ELDON,E. IN HONOR OF HIS CONTRIBUTIONS TO ION PHYSICS AND CHEMISTRY .B. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, vol. 81, R7-R9. link>
  • Smith D and Adams NG. 1987. Cyclic and linear isomers of C3H2+ and C3H3+ - the C3H+ + H2 reaction. vol. 76, 307-317. doi>
  • Adams NG and Smith D. 1987. Ferguson,Eldon,Earl. vol. 80, R7-R9.
  • Adams NG and Smith D. 1987. Gas-phase ionic reactions. vol. 71, 91-116.
  • SMITH D. 1987. INTERSTELLAR-MOLECULES. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, vol. 323(1572), 269-286. link> doi>
  • Smith D and Adams NG. 1987. Ionic reactions in thermal plasmas. vol. 83, 149-157. doi>
  • Herbst E, Adams NG, Smith D, Defrees DJ. 1987. Ion-molecule calculation of the abundance ratio of CCD to CCH in dense interstellar clouds. vol. 312, 351-357. doi>
  • Rebrion C, Marquette JB, Rowe BR, Adams NG, Smith D. 1987. Low-temperature reactions of some atomic ions with molecules of large quadrupole-moment - C6F6 and c-C6H12. vol. 136, 495-500. doi>
  • Adams NG and Smith D. 1987. On the synthesis of c-C3H2 in interstellar clouds. vol. 317, L25-L27.
  • ADAMS NG and SMITH D. 1987. RECENT ADVANCES IN THE STUDIES OF REACTION-RATES RELEVANT TO INTERSTELLAR CHEMISTRY. IAU SYMPOSIA, 1-18. link>
  • Adams NG and Smith D. 1987. SIFDT studies of some CH3+ ternary association reactions. vol. 81, 273-287. doi>
  • Tichy M, Twiddy ND, Wareing DP, Adams NG, Smith D. 1987. SIFDT STUDIES OF THE REACTIONS OF N-4+ IONS WITH H-2,D-2, AND AR. vol. 81, 235-246. doi>
  • Smith D and Adams NG. 1987. Studies of the reactions HBr(HI) + e <-> Br-(I-) + H using the FALP and SIFT techniques. vol. 20, 4903-4913. doi>
  • MILLAR TJ, ADAMS NG, SMITH D, LINDINGER W, VILLINGER H. 1986. THE CHEMISTRY OF SH+ IN SHOCKED INTERSTELLAR GAS. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 221(3), 673-678. link>
  • Ferguson EE, Adams NG, Smith D. 1986. 3-body association of CO+ and N2 - the case for a chemical-bond. vol. 128, 84-86. doi>
  • Adams NG, Smith D, Viggiano AA, Paulson JF, Henchman MJ. 1986. Dissociative attachment reactions of electrons with strong acid molecules. vol. 84, 6728-6731. doi>
  • Knight JS, Freeman CG, McEwan MJ, Smith SC, Adams NG, Smith D. 1986. Production and loss of HC3N in interstellar clouds - some relevant laboratory measurements. vol. 219, 89-94.
  • Barlow SE, Vandoren JM, Depuy CH, Bierbaum VM, Dotan I, Ferguson EE, Adams NG, Smith D, Rowe BR, Marquette JB, Dupeyrat G, Durupferguson M. 1986. Studies of the reaction of O2+ with deuterated methanes. vol. 85, 3851-3859. doi>
  • Adams NG and Smith D. 1985. A study of the nearly thermoneutral reactions of N+ with H2, HD and D2. vol. 117, 67-70. doi>
  • Adams NG, Smith D, Alge E, Burdon J. 1985. Anomalous temperature-dependence of the coefficient of electron-attachment to hexafluorobenzene. vol. 116, 460-464. doi>
  • Adams NG, Smith D, Ferguson EE. 1985. Comparative effects of temperature and kinetic-energy change on the reaction of O2+ with CH4 and CD4. Int. J. Mass Spectrom. Ion Process., vol. 67, 67-74. doi>
  • VIGGIANO AA, PAULSON JF, DALE F, HENCHMAN M, ADAMS NG, SMITH D. 1985. ION CHEMISTRY AND ELECTRON-AFFINITY OF WF6. JOURNAL OF PHYSICAL CHEMISTRY, vol. 89(11), 2264-2267. link> doi>
  • Adams NG and Smith D. 1985. Laboratory studies of the reactions of HCO+ (and DCO+) and N2H+ (and N2D+) with D-atoms and H-atoms - interstellar implications. vol. 294, L63-L65. doi>
  • Smith D and Adams NG. 1985. Production and loss processes for HCl in interstellar clouds - some relevant laboratory measurements. vol. 298, 827-829. doi>
  • Adams NG, Smith D, Clary DC. 1985. Rate coefficients for the reactions of ions with polar-molecules at interstellar temperatures. vol. 296, L31-L34. doi>
  • Knight JS, Freeman CG, McEwan MJ, Adams NG, Smith D. 1985. Selected-ion flow tube studies of HC3N. vol. 67, 317-330. doi>
  • Clary DC, Smith D, Adams NG. 1985. Temperature-dependence of rate coefficients for reactions of ions with dipolar molecules. vol. 119, 320-326. doi>
  • Millar TJ, Adams NG, Smith D, Clary DC. 1985. The HCS+/CS abundance ratio in interstellar clouds. vol. 216, 1025-1031.
  • Smith D and Adams NG. 1985. The proton affinity of CS. vol. 89, 3964-3965. doi>
  • Ferguson EE, Smith D, Adams NG. 1984. 3-body association reactions of O2+. And NO+ ions with Kr and Ar at80K. vol. 57, 243-248. doi>
  • Ferguson EE, Smith D, Adams NG. 1984. A correlation between slightly endothermic reactivity and ion molecule association reaction-rates. vol. 81, 742-747. doi>
  • Adams NG and Smith D. 1984. A further study of the near-thermoneutral reactions O2H+ + H2 <-> H3+ + O2. vol. 105, 604-607. doi>
  • Adams NG and Smith D. 1984. A study of the reactions of NH3+ and ND3+ with H2 and D2 at several temperatures. vol. 61, 133-139. doi>
  • SMITH D, ADAMS NG, ALGE E. 1984. ATTACHMENT COEFFICIENTS FOR THE REACTIONS OF ELECTRONS WITH CCL4, CCL3F, CCL2F2, CHCL3, CL2 AND SF6 DETERMINED BETWEEN 200-K AND 600-K USING THE FALP TECHNIQUE. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, vol. 17(3), 461-472. link> doi>
  • Smith D and Adams NG. 1984. Dissociative recombination coefficients for H3+, HCO+, N2H+, and CH5+ at low-temperature - interstellar implications. vol. 284, L13-L16. doi>
  • Smith D and Adams NG. 1984. Elementary interactions between charged and neutral species in plasmas. vol. 56, 175-188. doi>
  • Smith D, Adams NG, Alge E. 1984. Further-studies of the N2+ + N2 -> N4+ association reaction. vol. 105, 317-321. doi>
  • Herbst E, Smith D, Adams NG. 1984. Ion-molecule synthesis of C3O. vol. 138, L13-L14.
  • Adams NG, Smith D, Alge E. 1984. Measurements of dissociative recombination coefficients of H3+, HCO+, N2H+, and CH5+ at 95 K and 300 K using the FALP apparatus. vol. 81, 1778-1784. doi>
  • Ferguson EE, Adams NG, Smith D, Alge E. 1984. Rate coefficients at 300 K for the vibrational-energy transfer-reactions from N2(v=1) to O2+(v=0) and NO+(v=0). vol. 80, 6095-6098. doi>
  • Alge E, Adams NG, Smith D. 1984. Rate coefficients for the attachment reactions of electrons with c-C7F14, CH3Br, CF3Br, CH2Br2 and CH3I determined between 200 K and 600 K using the FALP technique. vol. 17, 3827-3833. doi>
  • Smith D, Adams NG, Ferguson EE. 1984. The heat of formation of C3H2+. vol. 61, 15-19. doi>
  • Adams NG, Smith D, Millar TJ. 1984. The importance of kinetically excited ions in the synthesis of interstellar-molecules. vol. 211, 857-865.
  • Rowe BR, Dupeyrat G, Marquette JB, Smith D, Adams NG, Ferguson EE. 1984. The reaction O2+ + CH4 -> CH3O2+ + H studied from 20 K to 560 K in a supersonic jet and in a SIFT. J. Chem. Phys., vol. 80, 241-245. doi>
  • Herbst E, Adams NG, Smith D. 1984. Theoretical reinvestigation of hydrocarbon and cyanoacetylene abundances in TMC-1. vol. 285, 618-621. doi>
  • Bohringer H, Arnold F, Smith D, Adams NG. 1983. A study of the temperature dependences of the N2+ + N2 -> N4+ and O2+ + O2 -> O4+ association reactions using the selected-ion flow-tube and drift-tube techniques. vol. 52, 25-41. doi>
  • SMITH D, ADAMS NG, ALGE E, HERBST E. 1983. ASSOCIATION REACTIONS OF NA+ AND SOME IMPLICATIONS FOR INTERSTELLAR CHEMISTRY. ASTROPHYSICAL JOURNAL, vol. 272(1), 365-368. link> doi>
  • Herbst E, Adams NG, Smith D. 1983. Laboratory measurements of ion-molecule reactions pertaining to interstellar hydrocarbon synthesis. vol. 269, 329-333. doi>
  • Alge E, Adams NG, Smith D. 1983. Measurements of the dissociative recombination coefficients of O2+, NO+ and NH4+ in the temperature-range 200-600 k. vol. 16, 1433-1444. doi>
  • Henchman MJ, Smith D, Adams NG. 1982. Estimation of enthalphy changes in several ion-molecule reactions in involving H-D exchange from zero-point energy considerations. vol. 42, 25-32. doi>
  • Smith D and Adams NG. 1982. Ionic recombination in the stratosphere. vol. 9, 1085-1087. doi>
  • Smith D, Adams NG, Alge E. 1982. Isotope exchange and collisional association in the reactions of CH3+ and its deuterated analogs with H2, HD, and D2. vol. 77, 1261-1268. doi>
  • Adams NG, Smith D, Henchman MJ. 1982. Isotope exchange in the reactions H3O + D2O, NH4+ + ND3, CH5+ + CD4 and their mirror reactions at thermal energies. vol. 42, 11-23. doi>
  • Smith D, Adams NG, Alge E. 1982. Some H/D exchange-reactions involved in the deuteration of interstellar molecules. vol. 263, 123-129. doi>
  • Adams NG and Smith D. 1981. A laboratory study of the reaction H3+ + HD <-> H2D+ + H2 the electron-densities and the temperatures in interstellar clouds. vol. 248, 373-379. doi>
  • Smith D and Adams NG. 1981. Charge-transfer reaction Ar+ + N2 <-> N2+ + Ar at thermal energies. vol. 23, 2327-2330.
  • SMITH D and ADAMS NG. 1981. CHARGE-TRANSFER REACTION AR++N2REVERSIBLEN2++AR AT THERMAL ENERGIES. PHYSICAL REVIEW A, vol. 23(5), 2327-2330. link> doi>
  • Smith D, Adams NG, Alge E. 1981. Ion-ion mutual neutralization and ion-neutral switching reactions of some stratospheric ions. vol. 29, 449-454. doi>
  • Smith D. 1981. Laboratory studies of isotope exchange in ion-neutral reactions - interstellar implications. Philos. Trans. R. Soc. Lond. Ser. A-Math. Phys. Eng. Sci., vol. 303, 535-542. doi>
  • Smith D and Adams NG. 1981. Molecular Synthesis in Interstellar Clouds: Recent Laboratory Studies of Ionic Reactions. vol. 1, 271-307.
  • Adams NG and Smith D. 1981. N14 N15 isotope fractionation in the reaction N2H+ + N2 - interstellar significance. vol. 247, L123-L125. doi>
  • Smith D, Adams NG, Lindinger W. 1981. Reactions of the HnS+ ions (n=0 to 3) with several molecular gases at thermal energies. vol. 75, 3365-3370. doi>
  • Smith D and Adams NG. 1981. Some positive-ion reactions with H2 - interstellar implications. vol. 197, 377-384.
  • Henchman MJ, Adams NG, Smith D. 1981. The isotope exchange-reactions H+ + D2 <-> HD + D+ and D+ + H2 <-> HD + H+ in the temperature range 200-300 K. vol. 75, 1201-1206.
  • HENCHMAN MJ, ADAMS NG, SMITH D. 1981. THE ISOTOPE EXCHANGE-REACTIONS H++D-2-REVERSIBLE-HD+D+ AND D++H-2-REVERSIBLE-HD+H+ IN THE TEMPERATURE-RANGE 200-300-K. JOURNAL OF CHEMICAL PHYSICS, vol. 75(3), 1201-1206. link> doi>
  • Adams NG and Smith D. 1981. The rate coefficients for several ternary association reactions at thermal energies. vol. 79, 563-567. doi>
  • Smith D and Adams NG. 1980. An ion-ion afterglow plasma as a source of simple and clustered positive and negative-ions. vol. 13, 1267-1273. doi>
  • Adams NG and Smith D. 1980. Charge-transfer reactions of Kr2+ and Ne2+ ions with several molecular gases at 300 K. vol. 35, 335-342. doi>
  • Smith D and Adams NG. 1980. Elementary plasma reactions of environmental interest. Top. Curr. Chem., vol. 89, 1-43.
  • Adams NG, Smith D, Paulson JF. 1980. Experimental survey of the reactions of NHn+ ions (n=0 to 4) with several diatomic and polyatomic-molecules at 300 K. vol. 72, 288-297. doi>
  • Smith D and Adams NG. 1980. Laboratory studies of isotope fractionation in the reactions of C+ and hco+ with co - interstellar implications. vol. 242, 424-431. doi>
  • Viggiano AA, Howorka F, Albritton DL, Fehsenfeld FC, Adams NG, Smith D. 1980. Laboratory studies of some ion-atom reactions related to inter-stellar molecular synthesis. vol. 236, 492-497. doi>
  • Field D, Adams NG, Smith D. 1980. Molecular synthesis in interstellar clouds - the radiative association reaction H+oh- h2o+hv. vol. 192, 1-10.
  • Smith D and Adams NG. 1980. Reactions of Ne++ and Kr++ with some atoms and molecules. vol. 25, 108.
  • Smith D, Adams NG, Alge E, Villinger H, Lindinger W. 1980. Reactions of Ne2+, ar2+, Kr2+ and xe2+ with the rare-gases at low energies. vol. 13, 2787-2799. doi>
  • Smith D and Adams NG. 1980. Reactions of NHn+ and NDn+ (n=0-4) with C2H4 and C2D4 at 300 K. vol. 76, 418-423. doi>
  • Adams NG, Smith D, Alge E. 1980. Reactions of the 2p3/2 and 2p1/2 doublet ground-states of Kr+ and Xe+ at 300k. vol. 13, 3235-3246. doi>
  • Smith D, Adams NG, Henchman MJ. 1980. Studies of the binary reactions of H3O+(H2O)0,1,2 ions and their deuterated analogs with D2O, H2O, and NH3. vol. 72, 4951-4957. doi>
  • Adams NG, Smith D, Lister DG, Rakshit AB, Twiddy ND. 1979. Further study of the ternary association reaction N2+ + N2 + He -> N4+ + He. vol. 61, 608-610. doi>
  • Adams NG, Lister DG, Rakshit AB, Tichy M, Twiddy ND, Smith D. 1979. Rate coefficients for several ternary association reactions of CH3+ in the temperature-range 100-300 K. vol. 63, 166-170. doi>
  • Adams NG, Smith D, Grief D. 1979. Single-charge transfer-reactions of the ground and metastable states of Xe2+ at 300 K. vol. 12, 791-800. doi>
  • Smith D, Grief D, Adams NG. 1979. Some reactions of Ar2+ with atoms and molecules at 300 K. vol. 30, 271-283. doi>
  • Tichy M, Rakshit AB, Lister DG, Twiddy ND, Adams NG, Smith D. 1979. Study of the reactions of the ground and metastable states of C+, N+, S+ and N2+ at 300 K. vol. 29, 231-247. doi>
  • SMITH D and ADAMS NG. 1978. BINARY AND TERNARY REACTIONS OF CH-3(+) IONS WITH SEVERAL MOLECULES AT THERMAL ENERGIES. CHEMICAL PHYSICS LETTERS, vol. 54(3), 535-540. link> doi>
  • Smith D, Adams NG, Church MJ. 1978. Emission of radiation from the neutralization reaction NO+ + NO2. vol. 11, 4041-4047. doi>
  • Church MJ and Smith D. 1978. Ionic recombination of atomic and molecular-ions in flowing afterglow plasmas. vol. 11, 2199-2206. doi>
  • Smith D, Adams NG, Miller TM. 1978. Laboratory study of reactions of N+, N2+, N3+, N4+, O+, O2+, and NO+ ions with several molecules at 300K. J. Chem. Phys., vol. 69, 308-318. doi>
  • Glosik J, Rakshit AB, Twiddy ND, Adams NG, Smith D. 1978. Measurement of the rates of reaction of the ground and metastable excited-states of O2+, NO+ and O+ with atmospheric gases at thermal-energy. vol. 11, 3365-3379. doi>
  • Smith D and Adams NG. 1978. Molecular synthesis in interstellar clouds - radiative association reactions of CH3+ ions. vol. 220, L87-L92. doi>
  • Smith D, Church MJ, Miller TM. 1978. Mutual neutralization of simple and clustered positive and negative-ions. vol. 68, 1224-1229. doi>
  • Adams NG and Smith D. 1978. Reactions of CHn+ ions with molecules at 300 K. vol. 54, 530-534. doi>
  • Adams NG, Smith D, Grief D. 1978. Reactions of HnCO+ ions with molecules at 300 K. vol. 26, 405-415. doi>
  • Church MJ and Smith D. 1977. Binary ionic recombination of SF5- and SF6- at 300 K. vol. 23, 137-145. doi>
  • Smith D, Adams NG, Grief D. 1977. Implications of some laboratory determinations of NO+ reaction-rates to cluster ion formation in D-region. vol. 39, 513-521. doi>
  • Smith D and Church MJ. 1977. Ion-ion recombination rates in earths atmosphere. vol. 25, 433-439. doi>
  • Smith D and Adams NG. 1977. Molecular synthesis in interstellar clouds - some relevant laboratory measurements. vol. 217, 741-748. doi>
  • Smith D and Adams NG. 1977. Reaction of simple hydrocarbon ions with molecules at thermal energies. vol. 23, 123-135. doi>
  • Smith D and Adams NG. 1977. Reactions of CHn+ ions with ammonia at 300 K. vol. 47, 145-149. doi>
  • Adams NG and Smith D. 1977. Reactions of hydrocarbon ions with hydrogen and methane at 300 K. vol. 47, 383-387. doi>
  • Smith D and Church MJ. 1976. Binary ion-ion recombination coefficients determined in a flowing afterglow plasma. vol. 19, 185-200. doi>
  • Smith D, Adams NG, Church MJ. 1976. Mutual neutralization rates of ionospherically important ions. vol. 24, 697-703. doi>
  • Adams NG and Smith D. 1976. Product-ion distributions for some ion-molecule reactions. vol. 9, 1439-1451. doi>
  • Adams NG and Smith D. 1976. Selected ion flow tube (SIFT) - technique for studying ion-neutral reactions. vol. 21, 349-359. doi>
  • Smith D, Adams NG, Dean AG, Church MJ. 1975. Application of langmuir probes to study of flowing afterglow plasmas. vol. 8, 141-152. doi>
  • Smith D and Dean AG. 1975. Electron-temperature relaxation rates in flowing afterglow plasmas containing molecular nitrogen and oxygen. vol. 8, 997-1108. doi>
  • Adams NG, Church MJ, Smith D. 1975. Experimental and theoretical investigation of dynamics of a flowing afterglow plasma. vol. 8, 1409-1422. doi>
  • Bedford DK, Adams NG, Smith D. 1975. Flux and spatial-distribution of micrometeoroids in near-earth environment. vol. 23, 1451-1456. doi>
  • SMITH D and ADAMS NG. 1975. IMPROVED DETECTOR FOR A MULTICOLLECTOR, CYCLOIDAL FOCUSING, MAGNETIC MASS-SPECTROMETER. JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, vol. 8(1), 44-46. link> doi>
  • Dean AG and Smith D. 1975. Ionospheric implications of recent laboratory determinations of electron-temperature relaxation rates. vol. 37, 1419-1422. doi>
  • Smith D, Dean AG, Adams NG. 1974. Electric-fields in afterglow of krypton-oxygen mixtures. vol. 24, 601. doi>
  • Smith D, Adams NG, Khan HA. 1974. Flux and composition of micrometeoroids in diameter range 1-10 mum. vol. 252, 101-106. doi>
  • Adams NG and Smith D. 1974. Multicollector, cycloidal focusing, magnetic mass-spectrometer. vol. 7, 759-768. doi>
  • Dean AG, Smith D, Adams NG. 1974. Observations of electron-temperature relaxation rates in rare-gas afterglow plasmas. vol. 7, 644-656. doi>
  • Smith D, Dean AG, Adams NG. 1974. Space-charge fields in afterglow plasmas. vol. 7, 1944-1962. doi>
  • Smith D and Plumb IC. 1973. Appraisal of mass-spectrometer diagnostic technique in study of afterglow plasmas. vol. 6, 1431-1446. doi>
  • Smith D and Plumb IC. 1973. Comparative experimental study of electron and positive-ion current collection by a cylindrical langmuir probe under orbital-limited conditions. vol. 6, 196-205. doi>
  • Smith D and Adams NG. 1973. Studies of plasma production at hypervelocity microparticle impact. vol. 6, 700-719. doi>
  • Adams NG, Smith D, Dean AG. 1973. The thermal energy reaction of atomic neon ions with molecular nitrogen. vol. 12, 383-388. link>
  • Smith D, Dean AG, Plumb IC. 1972. 3-body conversion reactions in pure rare-gases. vol. 5, 2134-2142. doi>
  • Smith D and Plumb IC. 1972. An appraisal of single Langmuir probe technique in the study of afterglow plasmas. vol. 5, 1226-1238.
  • Smith D. 1972. Application of langmuir probes to measurement of very low electron temperatures. vol. 20, 1717-1726. doi>
  • SMITH D and PLUMB IC. 1972. APPRAISAL OF SINGLE LANGMUIR PROBE TECHNIQUE IN STUDY OF AFTERGLOW PLASMAS. JOURNAL OF PHYSICS D-APPLIED PHYSICS, vol. 5(7), 1226-&. link> doi>
  • Smith D, Dean AG, Adams NG. 1972. Diffusion cooling in neon, argon, and krypton afterglow plasmas. vol. 253, 191-199. doi>
  • Plumb IC, Adams NG, Smith D. 1972. Formation and loss of O2+ and O4+ ions in krypton-oxygen afterglow plasmas. vol. 5, 1762-1772. doi>
  • Dean AG, Smith D, Plumb IC. 1972. Technique for recording Langmuir probe characteristics in afterglow plasmas. vol. 5, 776-778. doi>
  • Adams NG, Dean AG, Smith D. 1972. Thermal energy reactions of rare-gas atomic ions with molecular oxygen and nitrogen. vol. 10, 63-76. link>
  • Adams NG and Smith D. 1971. Studies of microparticle impact phenomena leading to development of a highly sensitive micrometeoroid detector. vol. 19, 195-204. doi>
  • Smith D, Goodall CV, Adams NG, Dean AG. 1970. Ion-density and electron-density decay rates in afterglow plasmas of argon and argon-oxygen mixtures. vol. 3, 34-44. doi>
  • Smith D, Goodall CV, Adams NG. 1969. Ionic reaction rates in afterglows of argon and argon-oxygen mixtures. vol. 14, 260.
  • Goodall CV and Smith D. 1968. A comparison of methods of determining electron densities in afterglow plasmas from langmuir probe characteristics. vol. 10, 249-261.
  • Smith D and Cromey PR. 1968. An inexpensive bakeable quadrupole mass spectrometer. vol. 1, 523-527.
  • Smith D and Cromey PR. 1968. Conversion rates and ion mobilities in pure neon and argon afterglow plasmas. vol. 1, 638-649.
  • Smith D and Goodall CV. 1968. Dissociative recombination coefficient of O2+ ions with electrons in temperature range 180-630 K. vol. 16, 1177-1180.
  • Smith D, Goodall CV, Copsey MJ. 1968. Investigation of helium afterglow. 2. Langmuir probe observations. vol. 1, 660-668.
  • Smith D and Copsey MJ. 1968. Investigation of helium afterglow. I. Mass spectrometric observations. vol. 1, 650-659.
  • Smith D and Fouracre RA. 1968. Temperature dependence of reaction rate coefficients of O+ ions with molecular oxygen and nitrogen. vol. 16, 243-252.
  • Copsey MJ, Smith D, Sayers J. 1966. Laboratory afterglow studies of O+ ions in helium-oxygen and helium-oxygen-nitrogen mixtures. vol. 14, 1047-1055.
  • Overton GDN, Smith D, Davies DE. 1965. A deviation from Paschens law in mercury vapour. vol. 16, 731-732.
  • Davies DE and Smith D. 1965. Primary ionization coefficients in mercury vapour at low pressures (5 Torr) using a pool cathode. vol. 16, 697-702.
  • Sayers J and Smith D. 1964. Ion and charge exchange reactions involving atmospheric gases. 167-175.
  • Španěl P, Dryahina K, Vicherková P, Smith D. 2015. Increase of methanol in exhaled breath quantified by SIFT-MS following aspartame ingestion. J Breath Res, vol. 9(4), 047104. link> doi>
  • Spesyvyi A, Smith D, Španěl P. 2015. Selected Ion Flow-Drift Tube Mass Spectrometry: Quantification of Volatile Compounds in Air and Breath. Anal Chem, vol. 87(24), 12151-12160. link> doi>

Chapters

  • Spanel P and Smith D. 2013. Recent SIFT-MS Studies of Volatile Compounds in Physiology, Medicine and Cell Biology. In VOLATILE BIOMARKERS: NON-INVASIVE DIAGNOSIS IN PHYSIOLOGY AND MEDICINE. Amann A and Smith D (Eds.). ELSEVIER SCIENCE BV. doi>
  • Turner C, Welch S, Bellingan G, Singer M, Spanel P, Smith D. 2005. Analysis of breath using SIFT-MS: A comparison of the breath composition of healthy volunteers and seriously-ill ICU patients. link> doi>
  • Bloor R, Wang TS, Spanel P, Smith D. 2005. Applications of selected ion flow tube mass spectrometry, SIFT-MS, in addiction research. link> doi>
  • Penault C, Spanel P, Smith D. 2005. Detection of H-pylori infection by breath ammonia following urea ingestion. Amann A and Smith D (Eds.). doi>
  • Spanel P and Smith D. 2005. Flowing afterglow mass spectrometry (FA-MS) for the determination of the deuterium abundance in breath water vapour and aqueous liquid headspace. Amann A and Smith D (Eds.). doi>
  • Smith D and Spanel P. 2005. Selected ion flow tube mass spectrometry, SIFT-MS, for on-line trace gas analysis of breath. link> doi>
  • Wang TS, Spanel P, Smith D. 2005. The combined use of SIFT-MS and FA-MS to investigate first-pass metabolism of ethanol. link> doi>
  • SPANEL P and SMITH D. 2004. Selected ion flow tube mass spectrometry (SIFT-MS) and flowing afterglow mass spectrometry (FA-MS) for the determination of the deuterium abundance in water vapour. Groot PAD (Ed.). Elsevier, ..
  • Smith D and Španěl P. 1999. SIFT applications in mass spectrometry. In Encyclopedia of Spectroscopy and Spectrometry, Mass Spectrometry. Lindon J, Trantner G, Holmes J (Eds.). London: Academic Press.
  • Smith D and Španěl P. 1995. Swarm techniques. In Atomic, Molecular, and Optical Physics: Charged Particles, Volume 29A (Experimental Methods in the Physical Sciences). Dunning FB and Hulet RG (Eds.). New York: Academic Press.
  • Smith D and Španěl P. 1994. FALP studies of electron-ion recombination and electron-attachment. In Linking the gaseous and condensed phases of matter - the behavior of slow electrons. Christophorou LG, Illenberger E, Schmidt WF (Eds.). (326th ed.). New York: Plenum Press Div Plenum Publishing Corp.
  • Smith D, Adams NG, Ferguson EE. 1990. Interstellar Ion Chemistry. Laboratory Studies. In Molecular Astrophysics. Hartquist TW (Ed.). Cambridge University Press.
  • Adams NG, Smith D, Herd CR. 1990. Recent FALP studies of dissociative recombination and electron-attachment. Gallagher JW, Hudson DF, Kunhardt EE, Vanbrunt RJ (Eds.).
  • Giles K, Smith D, Adams NG. 1990. Recent SIFT studies of ion molecule reactions - the deuteration of interstellar-molecules. Gallagher JW, Hudson DF, Kunhardt EE, Vanbrunt RJ (Eds.).
  • Henchman M, Smith D, Adams N, Paulson JF, Lindinger W. 1988. Chemical pathways for deuterium fractionation in interstellar molecules. In Rate Coefficients in Astrophysics. Millar TJ and Williams DA (Eds.). Kluwer.
  • Smith D and Adams NG. 1988. Drift Tube Studies of Ion-Neutral Reactions and their Relevance to Interstellar Chemistry. In Rate Coefficients in Astrochemistry. Millar TJ and Williams DA (Eds.). Kluwer.
  • Adams NG and Smith D. 1988. FALP Studies of Positive Ion/Electron Recombination. In Dissociative Recombination: Theory, Experiment and Applications. Hartquist TW (Ed.). World Publishing.
  • Adams NG and Smith D. 1988. Flowing Afterglow and SIFT. In Techniques for the Study of Gas-Phase Ion-Molecule Reactions. Farrar JM and Saunders Jr WH (Eds.). Wiley.
  • Adams NG and Smith D. 1988. Laboratory Studies of Dissociative Recombination and Mutual Neutralization and their Relevance to Interstellar Chemistry. In Rate Coefficients in Astrochemistry. Millar TJ and Williams DA (Eds.). Kluwer.
  • Henchman MJ, Smith D, Adams NG. 1987. On the need to Determine ‘Effective’ Temperatures in Measuring the Rates of Ion/Molecule Reactions. In Structure, Reactivity and Thermochemistry of Ions. Ausloos P and Lias SG (Eds.). D. Reidel.
  • Smith D and Adams NG. 1985. Ion-molecule reactions at low temperatures. In Molecular Astrophysics - State of the Art and Future Directions. Diercksen GHF and Reidel D (Eds.). Advanced Research Workshop.
  • Smith D and Adams NG. 1984. Isotope Exchange in Ion-Molecule Reactions. In Chemistry of Ions in the Gas Phase. Almoster Ferreira MA and Reidel D (Eds.). NATO Advanced Study Institute.
  • Smith D and Adams NG. 1984. Studies of Plasma Reaction Processes using a Flowing Afterglow/Langmuir Probe Apparatus. In Swarms of Ions and Electrons in Gases. Lindinger W, Mark TD, Howorka F (Eds.). Springer-Verlag.
  • Adams NG and Smith D. 1984. Temperature Dependences of Postive-Ion Molecule Reactions. In Swarms of Ions and Electrons in Gases. Lindinger W, Mark TD, Howorka F (Eds.). Springer-Verlag.
  • Lindinger W and Smith D. 1983. Influence of Translational and Internal Energy on Ion-Neutral Reactions. In Reactions of Small Transient Species: Kinetics and Energetics. Fontijn A and Clyne MAA (Eds.). Academic Press.
  • Adams NG and Smith D. 1983. Ion-Molecule Reactions at Low Temperatures. In Reactions of Small Transient Species: Kinetics and Energetics. Fontijn A and Clyne MAA (Eds.). Academic Press.
  • Smith D and Adams NG. 1983. Studies of Ion-Ion Recombination using Flowing Afterglow Plasmas. In Physics of Ion-Ion and Electron-Ion Collisions. F. B and J.W. M (Eds.). Plenum Press.
  • Smith D and Adams NG. 1979. Ion molecule reactions in low temperature plasma: formation of interstellar species. In Kinetics of ion-molecule reactions. Ausloos P (Ed.). New York: Plenum.
  • Smith D and Adams NG. 1979. Recent advances in flow tubes: Measurement of ion-molecule rate coefficients and product distribution. In Gas Phase Ion Chemistry. Bowers MT (Ed.). (1st ed.). Academic Press.
  • Davies DE, Smith D, Myatt J. 1962. Townsend ionization coefficients and the breakdown of Paschen's law in hydrogen, deuterium, and mercury vapour. In Ionization Phenomena in Gases, Volume I. Maecker H (Ed.). Amsterdam: North-Holland Publishing.

Other

  • Kumar S, Huang J, Abbassi-Ghadi N, Mackenzie H, Hoare J, Spanel P, Smith D, Hanna GB. 2014. SIFT-MS analysis of exhaled breath for volatile organic profiling of oesophago-gastric cancer. BRITISH JOURNAL OF SURGERY (vol. 101, pp. 17-18). link>
  • Gilchrist FJ, Simms H, Alcock A, Jones AM, Smith D, Spanel P, Webb AK, Lenney W. 2012. IS HYDROGEN CYANIDE A MARKER OF BURKHOLDERIA CEPACIA COMPLEX INFECTION?. THORAX (vol. 67, p. A102). link> doi>
  • Enderby BJ, Boit PC, Lenney W, Jones PW, Smith D. 2007. Selected ion flow tube mass spectrometry breath analysis in children: Bag or box?. THORAX (vol. 62, p. A77). link>
  • Chan C, Davies SJ, McIntyre C, Smith D, Spanel P. 2007. Increased ratio of extracellular to total body water (ECW/TBW) is related to comorbidity and fluid overload rather loss of lean body mass in haemodialysis (HD) patients. NEPHROLOGY DIALYSIS TRANSPLANTATION (vol. 22, p. 314). link>
  • Van Doren JM, Spanel P, Smith D. 2003. Real-time analysis of ammonia and volatile organic compounds from cooking meat: Application of the SIFT-MS technique. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY (vol. 225, p. U120). link>
  • Smith D, Spanel P, Lezius M, Scheier P, Märk TD. 1994. Interactions of Electrons with C60: Unusual Attachment Properties.
  • Gilchrist FJ, Belcher J, Jones AM, Smith D, Smyth A, Southern KW, Spanel P, Webb AK, Lenney W. 2014. THE INCIDENCE OF NEW PSEUDOMONAS AERUGINOSA INFECTION IN CHILDREN WITH CYSTIC FIBROSIS. THORAX (vol. 69, pp. A162-A163). link> doi>

Reference Book

A. Amman and D. Smith (Editors), Breath Analysis for Clinical Diagnosis and Therapeutic Monitoring, World Scientific, Singapore, 2005. ISBN 981-256-284-2