About: Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry

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About: Quantification of methane in humid air and exhaled breath using 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	In selected ion flow tube mass spectrometry, SIFT-MS, analyses of humid air and breath, it is essential to consider and account for the influence of water vapour in the media, which can be profound for the analysis of some compounds, including H2CO, H2S and notably CO2. To date, the analysis of methane has not been considered, since it is known to be unreactive with H3O+ and NO+, the most important precursor ions for SIFT-MS analyses, and it reacts only slowly with the other available precursor ion, O-2(+). However, we have now experimentally investigated methane analysis and report that it can be quantified in both air and exhaled breath by exploiting the slow O-2(+)/PCH4 reaction that produces CH3O2+ ions. We show that the ion chemistry is significantly influenced by the presence of water vapour in the sample, which must be quantified if accurate analyses are to be performed. In selected ion flow tube mass spectrometry, SIFT-MS, analyses of humid air and breath, it is essential to consider and account for the influence of water vapour in the media, which can be profound for the analysis of some compounds, including H2CO, H2S and notably CO2. To date, the analysis of methane has not been considered, since it is known to be unreactive with H3O+ and NO+, the most important precursor ions for SIFT-MS analyses, and it reacts only slowly with the other available precursor ion, O-2(+). However, we have now experimentally investigated methane analysis and report that it can be quantified in both air and exhaled breath by exploiting the slow O-2(+)/PCH4 reaction that produces CH3O2+ ions. We show that the ion chemistry is significantly influenced by the presence of water vapour in the sample, which must be quantified if accurate analyses are to be performed. (en)
Title	Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry (en)
skos:prefLabel	Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry (en)
skos:notation	RIV/61388955:_____/10:00355628!RIV11-GA0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0800), P(GP203/09/P172), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Dryahina, Kseniya 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	283615
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/10:00355628
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	mass spectrometry; SIFT-MS; breath (en)
http://linked.open.../riv/klicoveSlovo	mass spectrometry SIFT-MS breath
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[854D0C1A0A67]
http://linked.open...i/riv/nazevZdroje	Rapid Communications in Mass Spectrometry
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Pulse mode and microwave plasma sources - research and applications Identification of trace gases in human breath using SIFT-MS
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	24
http://linked.open...iv/tvurceVysledku	Dryahina, Kseniya Smith, D. Španěl, Patrik
http://linked.open...ain/vavai/riv/wos	000277352700011
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0951-4198
number of pages	9 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry

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