David Smith

David Smith's AcademicInfluence.com Rankings

David Smith

Physics

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Physics

David Smith's Degrees

PhD Physics Stanford University
Masters Physics University of California, Berkeley
Bachelors Physics University of California, Berkeley

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David Smith's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Selected ion flow tube mass spectrometry (SIFT-MS) for on-line trace gas analysis. (2005) (672)
Quantitative analysis of ammonia on the breath of patients in end-stage renal failure. (1997) (321)
A longitudinal study of ammonia, acetone and propanol in the exhaled breath of 30 subjects using selected ion flow tube mass spectrometry, SIFT-MS (2006) (320)
The challenge of breath analysis for clinical diagnosis and therapeutic monitoring. (2007) (304)
Progress in SIFT-MS: breath analysis and other applications. (2011) (294)
Breath analysis: the approach towards clinical applications. (2007) (185)
SIFT studies of the reactions of H3O+, NO+ and O2+ with a series of aldehydes and ketones (1997) (184)
SIFT studies of the reactions of H3O+, NO+ and O2+ with a series of alcohols (1997) (181)
Trace gases in breath of healthy volunteers when fasting and after a protein-calorie meal: a preliminary study. (1999) (176)
Analysis of formaldehyde in the headspace of urine from bladder and prostate cancer patients using selected ion flow tube mass spectrometry. (1999) (174)
Adsorption on solids (1974) (161)
Quantification of acetaldehyde released by lung cancer cells in vitro using selected ion flow tube mass spectrometry. (2003) (156)
Selected ion flow tube studies of the reactions of H3O+, NO+, and O2+ with several aromatic and aliphatic hydrocarbons (1998) (154)
The novel selected-ion flow tube approach to trace gas analysis of air and breath. (1996) (150)
Mass spectrometry for real-time quantitative breath analysis (2014) (147)
Ions in the terrestrial atmosphere and in interstellar clouds (1995) (137)
Selected ion flow tube: a technique for quantitative trace gas analysis of air and breath (1996) (129)
Selected ion flow tube – mass spectrometry: detection and real-time monitoring of flavours released by food products (1999) (126)
Application of ion chemistry and the SIFT technique to the quantitative analysis of trace gases in air and on breath (1996) (124)
A longitudinal study of methanol in the exhaled breath of 30 healthy volunteers using selected ion flow tube mass spectrometry, SIFT-MS (2006) (120)
Selected ion flow tube mass spectrometry analysis of exhaled breath for volatile organic compound profiling of esophago-gastric cancer. (2013) (119)
Breath acetone concentration; biological variability and the influence of diet (2011) (115)
Volatile metabolites in the exhaled breath of healthy volunteers: their levels and distributions (2007) (114)
Charge-transfer reaction Ar + + N 2 ⇄N + 2 + Ar at thermal energies (1981) (114)
SIFT studies of the reactions of H3O+, NO+ and O+2 with a series of volatile carboxylic acids and esters (1998) (114)
Reactions of Hydrated Hydronium Ions and Hydrated Hydroxide Ions with Some Hydrocarbons and Oxygen-Bearing Organic Molecules (1995) (112)
A longitudinal study of breath isoprene in healthy volunteers using selected ion flow tube mass spectrometry (SIFT-MS) (2006) (112)
Volatile Biomarkers : Non-Invasive Diagnosis in Physiology and Medicine (2013) (112)
Studies of Electron Attachment at Thermal Energies Using the Flowing Afterglow–Langmuir Probe Technique (1994) (107)
Ambient analysis of trace compounds in gaseous media by SIFT-MS. (2011) (100)
On-line measurement of the absolute humidity of air, breath and liquid headspace samples by selected ion flow tube mass spectrometry. (2001) (99)
Can volatile compounds in exhaled breath be used to monitor control in diabetes mellitus? (2011) (98)
Quantification of breath isoprene using the selected ion flow tube mass spectrometric analytical method. (1999) (97)
Direct, rapid quantitative analyses of BVOCs using SIFT-MS and PTR-MS obviating sample collection (2011) (97)
A selected ion flow tube mass spectrometry study of ammonia in mouth- and nose-exhaled breath and in the oral cavity. (2008) (89)
Dissociative recombination of H3+ and some other interstellar ions: a controversy resolved (1993) (86)
Influence of water vapour on selected ion flow tube mass spectrometric analyses of trace gases in humid air and breath. (2000) (85)
Hydrogen cyanide, a volatile biomarker of Pseudomonas aeruginosa infection (2013) (80)
On-line, simultaneous quantification of ethanol, some metabolites and water vapour in breath following the ingestion of alcohol. (2002) (80)
Quantification of ammonia in human breath by the selected ion flow tube analytical method using H30+ and 02+ precursor ions. (1998) (78)
SIFT studies of the reactions of H3O+, NO+ and O2+ with several ethers (1998) (76)
A new 'online' method to measure increased exhaled isoprene in end-stage renal failure. (2001) (75)
Variability in the concentrations of volatile metabolites emitted by genotypically different strains of Pseudomonas aeruginosa (2012) (74)
Selected ion flow tube studies of the reactions of H3O+, NO+, and O2+ with several amines and some other nitrogen-containing molecules (1998) (69)
Selected ion flow tube studies of the reactions of H3O+, NO+, and O2+ with some organosulphur molecules (1998) (68)
BULK AND SURFACE PROCESSES IN LOW-ENERGY-ELECTRON-INDUCED DECOMPOSITION OFCAF2 (1999) (68)
Quantification of hydrogen sulphide in humid air by selected ion flow tube mass spectrometry. (2000) (67)
Selected ion flow tube mass spectrometry analysis of volatile metabolites in urine headspace for the profiling of gastro-esophageal cancer. (2013) (66)
A study of sulfur-containing compounds in mouth- and nose-exhaled breath and in the oral cavity using selected ion flow tube mass spectrometry (2008) (66)
Selected ion flow tube mass spectrometry of urine headspace. (1999) (65)
Quantification of trace levels of the potential cancer biomarkers formaldehyde, acetaldehyde and propanol in breath by SIFT-MS (2008) (64)
Concentrations of some metabolites in the breath of healthy children aged 7–18 years measured using selected ion flow tube mass spectrometry (SIFT-MS) (2009) (64)
Concurrent use of H3O+, NO+, and O2+ 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 (2001) (64)
On-line, real time monitoring of exhaled trace gases by SIFT-MS in the perioperative setting: a feasibility study. (2011) (63)
Electron attachment to C60 at low energies (1993) (61)
Quantitative selected ion flow tube mass spectrometry: The influence of ionic diffusion and mass discrimination (2001) (60)
Analysis of ketones by selected ion flow tube mass spectrometry. (2003) (59)
Ionic diffusion and mass discrimination effects in the new generation of short flow tube SIFT-MS instruments (2009) (59)
On Ostwald’s supersaturation theory of rhythmic precipitation (Liesegang’s rings) (1984) (58)
On-line determination of the deuterium abundance in breath water vapour by flowing afterglow mass spectrometry with applications to measurements of total body water. (2001) (57)
Variation in hydrogen cyanide production between different strains of Pseudomonas aeruginosa (2011) (56)
Selected ion flow tube-MS analysis of headspace vapor from gastric content for the diagnosis of gastro-esophageal cancer. (2012) (56)
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 (1996) (55)
A laboratory study of the reversible reaction H3/+/ HD yields H2D/+/ + H2 - The electron densities and the temperatures in interstellar clouds (1981) (54)
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. (2001) (53)
Reactions of H3O+ and OH− ions with some organic molecules; applications to trace gas analysis in air (1995) (53)
The selected ion flow tube (SIFT)--a novel technique for biological monitoring. (1996) (52)
Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry. (2010) (50)
N-14/N-15 isotope fractionation in the reaction N2H/+/ + N2 - Interstellar significance (1981) (49)
Analysis of volatile emissions from porcine faeces and urine using selected ion flow tube mass spectrometry (2000) (48)
Selected Ion Flow Tube Mass Spectrometry for On-Line Trace Gas Analysis in Biology and Medicine (2007) (48)
Generation of volatile compounds on mouth exposure to urea and sucrose: implications for exhaled breath analysis (2006) (47)
Effects of dietary nutrients on volatile breath metabolites (2013) (46)
Volatile compounds in health and disease (2011) (45)
Selected ion flow tube studies of the reactions of H3O+, NO+, and O2+ with several aromatic and aliphatic monosubstituted halocarbons (1999) (45)
The Selected Ion Flow Tube Method for Workplace Analyses of Trace Gases in Air and Breath: Its Scope, Validation, and Applications (1998) (43)
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 (2009) (43)
Ion-molecule calculation of the abundance ratio of CCD to CCH in dense interstellar clouds. (1987) (42)
Rapid measurement of deuterium content of breath following oral ingestion to determine body water. (2001) (41)
SELECTED ION FLOW TUBE MASS SPECTROMETRY, SIFT-MS, FOR ON-LINE TRACE GAS ANALYSIS OF BREATH (2005) (41)
Dissociative recombination of H+3. Experiment and theory reconciled (1993) (40)
Analysis of petrol and diesel vapour and vehicle engine exhaust gases using selected ion flow tube mass spectrometry. (2002) (40)
Influence of weakly bound adduct ions on breath trace gas analysis by selected ion flow tube mass spectrometry (SIFT-MS) (2009) (39)
VALIDATION OF THE SIFT TECHNIQUE FOR TRACE GAS ANALYSIS OF BREATH USING THE SYRINGE INJECTION TECHNIQUE (1997) (38)
Assessment of rumen processes by selected-ion-flow-tube mass spectrometric analysis of rumen gases. (2001) (37)
Selected Ion Flow-Drift Tube Mass Spectrometry: Quantification of Volatile Compounds in Air and Breath. (2015) (37)
A comparison of the methods of determining electron densities in afterglow plasmas from langmuir probe characteristics (1968) (37)
Bronchoalveolar lavage examined by solid phase microextraction, gas chromatography--mass spectrometry and selected ion flow tube mass spectrometry. (2006) (37)
Selected ion flow tube studies of the reactions of H3O+, NO+, and O2+ with some chloroalkanes and chloroalkenes (1999) (36)
Selected ion flow tube studies of the reactions of H3O+, NO+, and O2+ with eleven amine structural isomers of c5h13n (1999) (36)
FALP studies of the dissociative recombination coefficients for O2+ and NO+ within the electron temperature range 300–2000 K (1993) (36)
Time-resolved selected ion flow tube mass spectrometric quantification of the volatile compounds generated by E. coli JM109 cultured in two different media. (2011) (36)
Quantification by SIFT-MS of acetaldehyde released by lung cells in a 3D model. (2013) (34)
SIFT-MS and FA-MS methods for ambient gas phase analysis: developments and applications in the UK. (2015) (34)
Formation of SF5− in electron attachment to SF6; swarm and beam results reconciled (1995) (31)
Magneto-Optical Effects and Short-Range Order in an Antiferromagnet (1965) (31)
FALP studies of electron attachment at elevated electron temperatures: the influence of attachment on electron energy distributions (1993) (31)
Pitfalls in the analysis of volatile breath biomarkers: suggested solutions and SIFT–MS quantification of single metabolites (2015) (30)
The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry. (2009) (29)
Diffusion cooling in neon, argon, and krypton afterglow plasmas (1972) (28)
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 (2000) (27)
On-line analysis of diesel engine exhaust gases by selected ion flow tube mass spectrometry. (2004) (27)
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. (2002) (27)
Status of selected ion flow tube MS: accomplishments and challenges in breath analysis and other areas. (2016) (26)
A selected ion flow tube study of the reactions of H3O+, NO+ and O2+• with seven isomers of hexanol in support of SIFT-MS (2012) (26)
Electron Temperature Relaxation in Afterglow Plasmas: Diffusion Cooling (1994) (25)
Account: On the Features, Successes and Challenges of Selected Ion Flow Tube Mass Spectrometry (2013) (25)
Laboratory studies of the reactions of HCO+ (and DCO+) and N2H+ (and N2D+) with D (and H) atoms: interstellar implications (1985) (25)
Studies of interstellar ion reactions using the SIFT technique: isotope fractionation (1992) (24)
A selected ion flow tube study of the reactions of F+, Cl+, Br+ and I+ with several molecular gases at 300 K (1990) (24)
The lifetimes of fast recombination luminescence transitions in alkali halides (1972) (24)
Formation and destruction of molecular ions in interstellar clouds (1988) (24)
What is the real utility of breath ammonia concentration measurements in medicine and physiology? (2018) (23)
The influence of electron-electron collisions on electron thermalization in He and Ar afterglow plasmas (2003) (23)
Quantification of volatile metabolites in exhaled breath by selected ion flow tube mass spectrometry, SIFT-MS (2020) (23)
Advantages of breath testing for the early diagnosis of lung cancer (2010) (23)
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. (2010) (23)
SIFT-MS Analysis of Nose-Exhaled Breath; Mouth Contamination and the Influence of Exercise (2013) (22)
A study of electron attachment to C70 using the FALP technique (1994) (22)
Reactions of the selected ion flow tube mass spectrometry reagent ions H3O(+) and NO(+) with a series of volatile aldehydes of biogenic significance. (2014) (22)
Selected ion flow tube, SIFT, studies of the reactions of H3O+, NO+ and O2+ with some biologically active isobaric compounds in preparation for SIFT-MS analyses (2011) (21)
Flux and composition of micrometeoroids in the diameter range 1–10 µ m (1974) (21)
CLINICAL STUDY: Quantification of breath carbon disulphide and acetone following a single dose of disulfiram (Antabuse) using selected ion flow tube mass spectrometry (SIFT‐MS) (2006) (20)
Chapter 1 – Recent advances in flow tubes: Measurement of ion–molecule rate coefficients and product distributions (1979) (19)
The Influence of Ion – Neutral Collisions in the Plasma Sheath on the Ion Current to an Electrostatic Probe: Monte Carlo Simulation (1995) (19)
On the importance of accurate quantification of individual volatile metabolites in exhaled breath (2017) (18)
Electron attachment to and in the gas phase (1996) (18)
The SIFT and FALP techniques; applications to ionic and electronic reactions studies and their evolution to the SIFT-MS and FA-MS analytical methods (2015) (18)
The influence of collisions in the space charge sheath on the ion current collected by a Langmuir probe (1995) (17)
SIFDT studies of the reactions of C+, CH+ and CH+2 with HCl and CO2, and CH+3 with HCl (1993) (17)
The reactions of positive and negative halogen ions with Cl2 and Br2 (1993) (17)
Monte Carlo simulations of the influence of ion: Neutral collisions on the ion currents collected by electrostatic probes (2002) (16)
A coordinated flowing afterglow and crossed beam study of electron attachment to CCl3Br (1997) (15)
Experimental and theoretical investigation of electron attachment to SF(5)Cl. (2008) (15)
Minimising the Effects of Isobaric Product Ions in SIFT-MS Quantification of Acetaldehyde, Dimethyl (2013) (13)
The proton affinity of carbon sulfide (CS) (1985) (13)
A further investigation of the reaction of C2H+2 with H2 (1993) (13)
A directly coupled monolithic rectangular resonator forming a robust microwave plasma ion source for SIFT-MS (2004) (12)
Understanding Gas Phase Ion Chemistry Is the Key to Reliable Selected Ion Flow Tube-Mass Spectrometry Analyses (2020) (12)
Recent SIFT-MS Studies of Volatile Compounds in Physiology, Medicine and Cell Biology (2013) (12)
SIFT Applications in Mass Spectrometry (1999) (12)
The role of $\rm H^+$ and $\rm H_3^+$ ions in the degradation of interstellar molecules (1994) (12)
Selected ion flow tube mass spectrometry (2020) (11)
DETECTION OF H. PYLORI INFECTION BY BREATH AMMONIA FOLLOWING UREA INGESTION (2005) (11)
Radiation from the reactions of NO + with Cl - and I - (1996) (10)
Electron stimulated desorption from CaF2: penetration depth of electrons and sample charging (1995) (10)
Molecular synthesis in interstellar clouds: Radiative association reactions of CH/sub 3//sup +/ ions (1978) (10)
A study of the electrodiffusion process in quartz (1990) (10)
Some reactions of the highly polar ion ArH+3 (1992) (9)
Variation in Exhaled Acetone and Other Ketones in Patients Undergoing Bariatric Surgery: a Prospective Cross-sectional Study (2018) (8)
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 (2004) (8)
The in vitro identification and quantification of volatile biomarkers released by cystic fibrosis pathogens (2015) (8)
The measurement of recombination luminescence lifetimes in the ns region by photon counting techniques (1970) (8)
Release of toxic ammonia and volatile organic compounds by heated cannabis and their relation to tetrahydrocannabinol content (2015) (7)
The reactions of some interstellar ions with benzene, cyclopropane and cyclohexane (1995) (7)
Ion chemistry at elevated ion-molecule interaction energies in a selected ion flow-drift tube: reactions of H3O+, NO+ and O2+ with saturated aliphatic ketones. (2017) (7)
Product ion distributions and rate coefficients for the attachment reactions of electrons with CHCl2Br, CCl2Br2, and CHClBr2 (2001) (7)
Flowing afterglow mass spectrometry (FA-MS) for the determination of the deuterium abundance in brea (2005) (7)
The increase of breath ammonia induced by niacin ingestion quantified by selected ion flow tube mass spectrometry (2006) (7)
The use of photon counting techniques for the measurement of recombination luminescence lifetimes (1969) (6)
Increase of the Charge Transfer Rate Coefficients for NO+ and O2+• Reactions with Isoprene Molecules at Elevated Interaction Energies. (2018) (5)
Understanding gas phase ion chemistry is the key to reliable SIFT-MS analyses. (2020) (5)
Counting cell number in situ by quantification of dimethyl sulphide in culture headspace. (2014) (5)
SIFT studies of the reactions of rare gas atomic ions with Cl2 and Br2 (1993) (4)
Magneto-Optical Investigation of Trivalent Dysprosium in Gadolinium Trichloride (1969) (4)
Autoionisation in copper vapour atoms: a study by ejected-electron spectroscopy following electron impact excitation (1987) (4)
Comment on ‘Influences of mixed expiratory sampling parameters on exhaled volatile organic compound concentrations’ (2011) (3)
The influences of gas and electron temperatures on electron attachment in gas electrical discharges (1998) (3)
Falp Studies of Electron-Ion Recombination and Electron Attachment (1994) (3)
Dissociation of H3O+, NO+ and O2+• reagent ions injected into nitrogen carrier gas in SIFT-MS and reactivity of the ion fragments (2020) (3)
A Pilot Study of Ion - Molecule Reactions at Temperatures Relevant to the Atmosphere of Titan (2016) (3)
The ejected-electron spectra of manganese and samarium vapour atoms arising from autoionizing and Auger transitions following electron impact excitation (1990) (3)
Selected ion flow tube mass spectrometry, SIFT-MS; new horizons in real time air and breath analysis (2010) (2)
OBSERVATIONS OF IONIC PROCESSES IN GASEOUS AFTERGLOWS. (1965) (2)
Temperature Dependences of Positive-Ion Molecule Reactions (1984) (2)
Kinetics of reactions of NH4 + with some biogenic organic molecules and monoterpenes in He and N2 carrier gases: a potential SIFT-MS reagent ion. (2022) (2)
Selected Ion Flow Tube (SIFT) Applications in Mass Spectrometry (2017) (2)
Ternary association reactions of H3 O+ , NO+ and O2 +• with N2 , O2 , CO2 and H2 O; implications for SIFT-MS analyses of air and breath. (2021) (2)
Experimental study of the reaction of NO2− ions with CO2 molecules at temperatures and energies relevant to the Martian atmosphere (2020) (2)
Different reactivities of H3 O+ (H2 O)n with unsaturated and saturated aldehydes; ligand switching reactions govern the quantitative analytical sensitivity of SESI-MS. (2023) (1)
From molecules in space to molecules in breath. (2016) (1)
A Study of the Sodium-Scandium-Lithium Iodide HID Lamp Fill and Application to 4000 K Design (1994) (1)
P88 Is Hydrogen Cyanide a Marker of Burkholderia Cepacia Complex Infection? (2012) (1)
The ejected-electron autoionisation spectrum of Au I from 0-3.5 eV excited by electron impact (1988) (1)
Status of selected ion flow tube mass spectrometry ; accomplishments and 3 challenges in breath analysis and other areas (2016) (1)
Relative influence of helium and nitrogen carrier gases on analyte ion branching ratios in SIFT-MS (2022) (1)
Modeling of cation binding in hydrated 2:1 clay minerals. Progress report, September 15, 1996--September 14, 1997 (1997) (0)
Experimental study of the reaction of O− ions with CO2 molecules with different ternary gases at temperatures relevant to the martian ionosphere (2021) (0)
P197 The Incidence Of New Pseudomonas Aeruginosa Infection In Children With Cystic Fibrosis (2014) (0)
Bulk and surface processes in low-energy-electron-induced decomposition of CaF (1999) (0)
Dissociative recombination of H 3 + , HCO + , N 2 H + and CH 5 + . (1985) (0)
The energy dependence of some neon-ion-neutral reaction rate coefficients investigated in a flow-drift tube experiment (2016) (0)
IONIC REACTIONS IN THE IONOSPHERIC GASES. (1964) (0)
Recent developments and applications of selected ion flow tube mass spectrometry (SIFT-MS). (2023) (0)
Selected ion flow-drift tube mass spectrometry , SIFDT-MS : quantification of volatile compounds in air and breath (2016) (0)
Ion formation in microwave discharge through moist air (2002) (0)
Molecular Synthesis in Interstellar Clouds - the Radiative Association Reaction H+OH_H2O+H/UPSILON (1980) (0)
Contributors (2020) (0)
Ionic Reactions of Atmospheric Importance. (1984) (0)
A Simon–Weiss model for supergranule flows and their cross-correlations (1999) (0)
A Pilot Study of Ion - Molecule Reactions at Temperatures Relevant to the Atmosphere of Titan (2016) (0)
Crystallographic alignment in solid state zeeman spectroscopy. (1968) (0)
SIFT and FALP determinations of ionic reactions rate coefficients (2008) (0)
mber in situ by quanti fi cation of dimethyl sulphide in culture headspace (2014) (0)
Solutions to radionuclide migration with nonlinear retardation mechanisms in backfill material. Interim progress report, June-December 1982 (1983) (0)
SIFT and FALP Studies of Plasma Reaction Processes. (1992) (0)

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What Schools Are Affiliated With David Smith?

David Smith is affiliated with the following schools:

University of California, Berkeley
Stanford University
Keele University