کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1205044 965179 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gas chromatography–mass spectrometry resolution of sugar acid enantiomers on a permethylated β-cyclodextrin stationary phase
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Gas chromatography–mass spectrometry resolution of sugar acid enantiomers on a permethylated β-cyclodextrin stationary phase
چکیده انگلیسی

Analysis of compounds in meteorites revealed a need to simultaneously characterize multiple enantiomers of sugar acids (aldonic acids) present in trace amounts. Analyses by gas chromatography–mass spectrometry demonstrated that all but two of the three-carbon through six-carbon straight-chained sugar acid enantiomer pairs could be resolved using a single derivatization procedure and one set of GC parameters. Compounds were analyzed as their ethyl ester/O-triflouroacetyl, isopropyl ester/O-triflouroacetyl and isopropyl ester/O-pentafluoropropionyl derivatives on a capillary column containing permethylated β-cyclodextrin (Chirasil-Dex CB) as the stationary phase. Characteristic mass fragments are related to the ester groups while several ions are also common to derivatized monosaccharides.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1216, Issue 40, 2 October 2009, Pages 6838–6843
نویسندگان
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