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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F03%3A54030265%21RIV%2F2004%2FAV0%2FA54004%2FN
rdf:type
n3:Vysledek skos:Concept
dcterms:description
A selected ion flow tube-mass spectrometry (SIFT-MS) study of the reactions of H3O+, NO+ and O2+. ions with the ketones (M) 2-heptanone, 2-octanone, 2-nonanone, 2-undecanone and 2-aminoacetophenone, has been conducted in preparation for studies of volatile emissions from bacteria. The H3O+ reactions all proceed rapidly via exothermic proton transfer, producing only MH+ ions that form their monohydrates when water vapour is present in the helium carrier gas. The O2+. reactions proceed rapidly via dissociative charge transfer producing parent cations M+. and some fragment ions. The NO+ reactions form the NO+M adduct ions at rates which are dependent on the pressure of the helium carrier gas. Combining the present NO+ kinetic data with those available from previous SIFT studies, the phenomenon of charge transfer complexing is clearly demonstrated. This results in adduct formation in these NO+/ketone reactions at or near the collisional rate. SIFT-MS spectra. A selected ion flow tube-mass spectrometry (SIFT-MS) study of the reactions of H3O+, NO+ and O2+. ions with the ketones (M) 2-heptanone, 2-octanone, 2-nonanone, 2-undecanone and 2-aminoacetophenone, has been conducted in preparation for studies of volatile emissions from bacteria. The H3O+ reactions all proceed rapidly via exothermic proton transfer, producing only MH+ ions that form their monohydrates when water vapour is present in the helium carrier gas. The O2+. reactions proceed rapidly via dissociative charge transfer producing parent cations M+. and some fragment ions. The NO+ reactions form the NO+M adduct ions at rates which are dependent on the pressure of the helium carrier gas. Combining the present NO+ kinetic data with those available from previous SIFT studies, the phenomenon of charge transfer complexing is clearly demonstrated. This results in adduct formation in these NO+/ketone reactions at or near the collisional rate. SIFT-MS spectra.
dcterms:title
Analysis of Ketones by Selected Ion Flow Tube Mass Spectrometry. Analysis of Ketones by Selected Ion Flow Tube Mass Spectrometry.
skos:prefLabel
Analysis of Ketones by Selected Ion Flow Tube Mass Spectrometry. Analysis of Ketones by Selected Ion Flow Tube Mass Spectrometry.
skos:notation
RIV/61388955:_____/03:54030265!RIV/2004/AV0/A54004/N
n4:strany
2655;2660
n4:aktivita
n11:P n11:Z
n4:aktivity
P(GA202/03/0827), P(GA203/02/0737), Z(AV0Z4040901)
n4:cisloPeriodika
N/A
n4:dodaniDat
n8:2004
n4:domaciTvurceVysledku
n10:9912479
n4:druhVysledku
n12:J
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n15:predkladatel
n4:idSjednocenehoVysledku
598088
n4:idVysledku
RIV/61388955:_____/03:54030265
n4:jazykVysledku
n7:eng
n4:klicovaSlova
mass spectrometry; selected ion flow tube; ketones
n4:klicoveSlovo
n6:mass%20spectrometry n6:ketones n6:selected%20ion%20flow%20tube
n4:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n4:kontrolniKodProRIV
[714AE641791C]
n4:nazevZdroje
Rapid Communications in Mass Spectrometry
n4:obor
n18:CF
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
3
n4:pocetUcastnikuAkce
0
n4:pocetZahranicnichUcastnikuAkce
0
n4:projekt
n5:GA203%2F02%2F0737 n5:GA202%2F03%2F0827
n4:rokUplatneniVysledku
n8:2003
n4:svazekPeriodika
17
n4:tvurceVysledku
Smith, D. Wang, T. Španěl, Patrik
n4:zamer
n14:AV0Z4040901
s:issn
0951-4198
s:numberOfPages
6