CARBON ISOTOPIC VARIATIONS OF KEROGEN PYROLYZATES

被引:19
作者
BURWOOD, R [1 ]
DROZD, RJ [1 ]
HALPERN, HI [1 ]
SEDIVY, RA [1 ]
机构
[1] STAND OIL PROD CO,IRVING,TX 75063
关键词
CARBON - Isotopes - GEOCHEMISTRY - Exploratory - ISOTOPES - Analysis - ORGANIC COMPOUNDS - Pyrolysis;
D O I
10.1016/0146-6380(88)90254-9
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
A method has been developed for isotopic analysis of pyrolyzates from temperature-programmed pyrolysis of small quantities of immature to early mature kerogen concentrates. A C//5// plus pyrolyzate is collected and oxidized on-line to carbon dioxide for stable carbon isotopic measurement. Results indicate that the carbon isotopic composition of the pyrolyzate varies with final pyrolysis temperature by up to 0. 7 ppt. Based on the limited pyrolyzate isotopic variation with temperature, this method is considered to have potential application to source-oil assignment problems. Correlation can be achieved via composite carbon isotopic profiling; the elegance of the method deriving from the comparison of a petroleum with the oil labile component of a candidate source kerogen assemblage.
引用
收藏
页码:195 / 205
页数:11
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