Selected Ion Flow-Drift Tube Mass Spectrometry: Quantification of Volatile Compounds in Air and Breath
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10319912" target="_blank" >RIV/00216208:11320/15:10319912 - isvavai.cz</a>
Alternative codes found
RIV/61388955:_____/15:00454143
Result on the web
<a href="http://dx.doi.org/10.1021/acs.analchem.5b02994" target="_blank" >http://dx.doi.org/10.1021/acs.analchem.5b02994</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.analchem.5b02994" target="_blank" >10.1021/acs.analchem.5b02994</a>
Alternative languages
Result language
angličtina
Original language name
Selected Ion Flow-Drift Tube Mass Spectrometry: Quantification of Volatile Compounds in Air and Breath
Original language description
A selected ion flow-drift tube mass spectrometric analytical technique, SIFDT-MS, is described that extends the established selected ion flow tube mass spectrometry, SIFT-MS, by the inclusion of a static but variable E-field along the axis of the flow tube reactor in which the analytical ion molecule chemistry occurs. The ion axial speed is increased in proportion to the reduced field strength E/N (N is the carrier gas number density), and the residence/reaction time, t, which is measured by Hadamard transform multiplexing, is correspondingly reduced. To ensure a proper understanding of the physics and ion chemistry underlying SIFDT-MS, ion diffusive loss to the walls of the flow-drift tube and the mobility of injected H3O+ ions have been studied as a function of E/N. It is seen that the derived diffusion coefficient and mobility of H3O+ ions are consistent with those previously reported. The rate coefficient has been determined at elevated E/N for the association reaction of the H3O+ reagent ions with H2O molecules, which is the first step in the production of H3O+(H2O)(1,2,3) reagent hydrate ions. The production of hydrated analyte ion was also experimentally investigated. The analytical performance of SIFDT-MS is demonstrated by the quantification of acetone and isoprene in exhaled breath. Finally, the essential features of SIFDT-MS and SIFT-MS are compared, notably pointing out that a much lower speed of the flow-drive pump is required for SIFDT-MS, which facilitates the development of smaller cost-effective analytical instruments for real time breath and fluid headspace analyses.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-28882S" target="_blank" >GA13-28882S: Excitation, separation and fragmentation of ions by drift fields in SIFT-MS for immediate selective trace gas quantification</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Analytical Chemistry
ISSN
0003-2700
e-ISSN
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Volume of the periodical
87
Issue of the periodical within the volume
24
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
12151-12160
UT code for WoS article
000366871500030
EID of the result in the Scopus database
2-s2.0-84950140884