Localization of double bonds in wax esters by high-performance liquid chromatography/atmospheric pressure chemical ionization mass spectrometry utilizing the fragmentation of acetonitrile-related adducts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10104993" target="_blank" >RIV/00216208:11310/11:10104993 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/ac1030682" target="_blank" >http://dx.doi.org/10.1021/ac1030682</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/ac1030682" target="_blank" >10.1021/ac1030682</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Localization of double bonds in wax esters by high-performance liquid chromatography/atmospheric pressure chemical ionization mass spectrometry utilizing the fragmentation of acetonitrile-related adducts

Popis výsledku v původním jazyce

Unsaturated wax esters (WEs) provided molecular adducts with C(3)H(5)N ([M + 55](+center dot)) in APCI sources in the presence of acetonitrile. CID MS/MS of [M + 55](+center dot) yielded fragments allowing the localization of double bond(s) in the hydrocarbon chains of the WEs. These fragments were formed by a cleavage on each side of the double bond. In methylene-interrupted polyunsaturated WEs, diagnostic fragments related to each double bond were detected; the most abundant were those corresponding to the cleavage of the C-C bond next to the first and the last double bond. To differentiate between those fragments differing in their structure or origin, a simple nomenclature based on alpha and omega ions has been introduced. Fragmentation of the alpha-type ions (fragments containing an ester bond) provided information on the occurrence of a double bond in the acid or alcohol part of the WEs. While no significant differences between the spectra of the WEs differing by cis/trans isomer

Název v anglickém jazyce

Localization of double bonds in wax esters by high-performance liquid chromatography/atmospheric pressure chemical ionization mass spectrometry utilizing the fragmentation of acetonitrile-related adducts

Popis výsledku anglicky

Unsaturated wax esters (WEs) provided molecular adducts with C(3)H(5)N ([M + 55](+center dot)) in APCI sources in the presence of acetonitrile. CID MS/MS of [M + 55](+center dot) yielded fragments allowing the localization of double bond(s) in the hydrocarbon chains of the WEs. These fragments were formed by a cleavage on each side of the double bond. In methylene-interrupted polyunsaturated WEs, diagnostic fragments related to each double bond were detected; the most abundant were those corresponding to the cleavage of the C-C bond next to the first and the last double bond. To differentiate between those fragments differing in their structure or origin, a simple nomenclature based on alpha and omega ions has been introduced. Fragmentation of the alpha-type ions (fragments containing an ester bond) provided information on the occurrence of a double bond in the acid or alcohol part of the WEs. While no significant differences between the spectra of the WEs differing by cis/trans isomer

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Analytical Chemistry

ISSN

0003-2700

e-ISSN

—

Svazek periodika

83

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

2978-2986

Kód UT WoS článku

000289223700021

EID výsledku v databázi Scopus

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