Název:
Structural characterization of fatty acids with triple bond and unusual double bond positions by HPLC/APCI-MS2
Autoři:
Horká, Petra ; Vrkoslav, Vladimír ; Cvačka, Josef Typ dokumentu: Příspěvky z konference Konference/Akce: International Students Conference „Modern Analytical Chemistry“ /15./, Praha (CZ), 20190919
Rok:
2019
Jazyk:
eng
Abstrakt: Fatty acid methyl esters (FAMEs) were analyzed by reversed-phase HPLC coupled to atmospheric pressure chemical ionization (APCI) mass spectrometry. Acetonitrile was used as mobile phase. The gas-phase reactions of acetonitrile and unsaturated FAMEs in the APCI source provided [M + C3H5N]+• adducts. Subsequent MS/MS analysis of these ions gave diagnostic fragments. The formation and fragmentation of the acetonitrile-related adducts were utilized for the structural characterization of FAME with isolated double bonds in (Z)-9,19-hexacosadienoic acid methyl ester, FAME with conjugated double bonds in (Z)-9,11-octadecadienoic acid methyl ester and FAME with a triple bond in 9-octadecynoic acid methyl ester.
Klíčová slova:
acetonitrile-related adducts; acetylenic lipids; mass spectrometry; multiple bond localization Zdrojový dokument: Proceedings of the 15th International Students Conference „Modern Analytical Chemistry“, ISBN 978-80-7444-068-7
Instituce: Ústav organické chemie a biochemie AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0302328