About: The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry

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About: The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The reactions of carbon dioxide, CO2, with the precursor ions used for selected ion flow tube mass spectrometry, SIFT-MS, analyses, viz. H3O+, NO+ and O2+, are so slow that the presence of CO2 in exhaled breath has, until recently, not had to be accounted for in SIFT-MS analyses of breath. This has, however, to be accounted for in the analysis of acetaldehyde in breath, because an overlap occurs of the monohydrate of protonated acetaldehyde and the weakly bound adduct ion, H3O+CO2, formed by the slow association reaction of the precursor ion H3O+ with CO2 molecules. The understanding of the kinetics of formation and the loss rates of the relevant ions gained from experimentation using the new generation of more sensitive SIFT-MS instruments now allows accurate quantification of CO2 in breath using the level of the H3O+CO2 adduct ion. However, this is complicated by the rapid reaction of H3O+CO2 with water vapour molecules, H2O, that are in abundance in exhaled breath. The reactions of carbon dioxide, CO2, with the precursor ions used for selected ion flow tube mass spectrometry, SIFT-MS, analyses, viz. H3O+, NO+ and O2+, are so slow that the presence of CO2 in exhaled breath has, until recently, not had to be accounted for in SIFT-MS analyses of breath. This has, however, to be accounted for in the analysis of acetaldehyde in breath, because an overlap occurs of the monohydrate of protonated acetaldehyde and the weakly bound adduct ion, H3O+CO2, formed by the slow association reaction of the precursor ion H3O+ with CO2 molecules. The understanding of the kinetics of formation and the loss rates of the relevant ions gained from experimentation using the new generation of more sensitive SIFT-MS instruments now allows accurate quantification of CO2 in breath using the level of the H3O+CO2 adduct ion. However, this is complicated by the rapid reaction of H3O+CO2 with water vapour molecules, H2O, that are in abundance in exhaled breath. (en)
Title	The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry (en)
skos:prefLabel	The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry The quantification of carbon dioxide in humid air and exhaled breath by selected ion flow tube mass spectrometry (en)
skos:notation	RIV/61388955:_____/09:00329750!RIV10-AV0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0800), P(GA203/09/0256), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Španěl, Patrik
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	337828
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/09:00329750
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	trace gras-analysis; quantitative analysis; SIFT-MS (en)
http://linked.open.../riv/klicoveSlovo	trace gras-analysis SIFT-MS quantitative analysis
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[9A6FCB6CBC54]
http://linked.open...i/riv/nazevZdroje	Rapid Communications in Mass Spectrometry
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Pulse mode and microwave plasma sources - research and applications Selected ion flow tube mass spectrometry studies of volatile compounds emited by bacterial cultures
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	23
http://linked.open...iv/tvurceVysledku	Smith, D. Španěl, Patrik Pysanenko, A.
http://linked.open...ain/vavai/riv/wos	000265985000003
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0951-4198
number of pages	7 (xsd:int)

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