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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F02%3A00001413%21RIV%2F2003%2FMSM%2F153103%2FN
rdf:type
skos:Concept n14:Vysledek
dcterms:description
A method based on the coupling of capillary electrophoresis with mass spectrometry (CE/MS) was developed for the monitoring of 3-quinuclidinol and its four N-alkyl derivatives (methyl, ethyl, propyl and isopropyl derivatives). A fragmentation study (collision-induced dissociation of ions in an ion trap) and optimization of the ion optics set-up for CE/MS experiments using direct infusion of a methanolic solution of the standards into the mass spectrometer were carried out in advance. Molecular ions ofall quaternary compounds and the quasi-molecular ion [M + H](+) of free 3-quinuclidinol prevail in the mass spectra. In the MS/MS of propyl and isopropyl derivatives, the elimination of the alkyl chain dominates, leading to the ion at m/z 128. The fragm entation of the other compounds is more complex. Previous CE separation of the mixture of isobaric propyl and isopropyl derivatives is necessary for their unambiguous identification. A 10 mm ammonium acetate buffer (pH 4.0) is the optimum running electro A method based on the coupling of capillary electrophoresis with mass spectrometry (CE/MS) was developed for the monitoring of 3-quinuclidinol and its four N-alkyl derivatives (methyl, ethyl, propyl and isopropyl derivatives). A fragmentation study (collision-induced dissociation of ions in an ion trap) and optimization of the ion optics set-up for CE/MS experiments using direct infusion of a methanolic solution of the standards into the mass spectrometer were carried out in advance. Molecular ions ofall quaternary compounds and the quasi-molecular ion [M + H](+) of free 3-quinuclidinol prevail in the mass spectra. In the MS/MS of propyl and isopropyl derivatives, the elimination of the alkyl chain dominates, leading to the ion at m/z 128. The fragm entation of the other compounds is more complex. Previous CE separation of the mixture of isobaric propyl and isopropyl derivatives is necessary for their unambiguous identification. A 10 mm ammonium acetate buffer (pH 4.0) is the optimum running electro
dcterms:title
Capillary electrophoresis/mass spectrometry: a promising tool for the control of some physiologically hazardous compounds. I - Derivatives of 3-quinuclidinol Capillary electrophoresis/mass spectrometry: a promising tool for the control of some physiologically hazardous compounds. I - Derivatives of 3-quinuclidinol
skos:prefLabel
Capillary electrophoresis/mass spectrometry: a promising tool for the control of some physiologically hazardous compounds. I - Derivatives of 3-quinuclidinol Capillary electrophoresis/mass spectrometry: a promising tool for the control of some physiologically hazardous compounds. I - Derivatives of 3-quinuclidinol
skos:notation
RIV/61989592:15310/02:00001413!RIV/2003/MSM/153103/N
n3:strany
1213-1218
n3:aktivita
n12:Z
n3:aktivity
Z(MSM 153100013)
n3:cisloPeriodika
12
n3:dodaniDat
n17:2003
n3:domaciTvurceVysledku
n4:3402568 n4:3302016 n4:4316851 n4:6267408 n4:6013449 n4:1077074 n4:8390924 n4:5110386
n3:druhVysledku
n6:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
640097
n3:idVysledku
RIV/61989592:15310/02:00001413
n3:jazykVysledku
n15:eng
n3:klicovaSlova
3-quinuclidinol; quaternary ammonium salt; capillary electrophoresis; electrospray ionization; mass spectrometry; capillary electrophoresis/mass spectrometry
n3:klicoveSlovo
n5:mass%20spectrometry n5:capillary%20electrophoresis n5:capillary%20electrophoresis%2Fmass%20spectrometry n5:electrospray%20ionization n5:3-quinuclidinol n5:quaternary%20ammonium%20salt
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[1B80F0B84FD8]
n3:nazevZdroje
Journal of Mass Spectrometry
n3:obor
n7:CB
n3:pocetDomacichTvurcuVysledku
8
n3:pocetTvurcuVysledku
8
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:rokUplatneniVysledku
n17:2002
n3:svazekPeriodika
37
n3:tvurceVysledku
Lemr, Karel Stýskala, Jakub Ševčík, Juraj Barták, Petr Wiedermanová, Iveta Bednář, Petr Hlaváč, Jan Stránský, Zdeněk
n3:zamer
n18:MSM%20153100013
s:issn
1076-5174
s:numberOfPages
6
n13:organizacniJednotka
15310