ENHANCED RESOLUTION OF ORGANIC-COMPOUNDS FROM SEDIMENTS BY ISOTOPIC GAS-CHROMATOGRAPHY COMBUSTION MASS-SPECTROMETRY

被引：18

作者：

LICHTFOUSE, E ^{[1
]}

FREEMAN, KH ^{[1
]}

COLLISTER, JW ^{[1
]}

MERRITT, DA ^{[1
]}

机构：

[1] INDIANA UNIV,BIOGEOCHEM LABS,BLOOMINGTON,IN 47405

来源：

JOURNAL OF CHROMATOGRAPHY | 1991年 / 585卷 / 01期

关键词：

D O I：

10.1016/0021-9673(91)85074-P

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The resolution of organic compounds from sediments is increased by C-13/C-12 isotopic gas chromatography-combustion-mass spectrometry relative to gas chromatography with flame ionization detection. Impurities which elute close together with n-alkanes, phytane and a C32 hopanoid acid methyl ester are resolved with a valley increase of up to 100%. This phenomenon is probably due to fractionation during gas chromatographic elution and enhanced detection monitoring of the isotopic composition of the carbon dioxide produced by the combustion of the eluting substances.

引用

页码：177 / 180

页数：4

共 14 条

[1] PROKARYOTIC TRITERPENOIDS .2. 2-BETA-METHYLHOPANOIDS FROM METHYLOBACTERIUM-ORGANOPHILUM AND NOSTOC-MUSCORUM, A NEW SERIES OF PROKARYOTIC TRITERPENOIDS [J].