COMPLEX SERIES OF PENTACYCLIC TRITERPANES IN A LACUSTRINE-SOURCED OIL FROM KOREA BAY BASIN

被引：57
作者：
KILLOPS, SD
HOWELL, VJ
机构：
[1] Chemistry Department, Royal Holloway and Bedford New College, University of London, Egham, Surrey TW20 0EX, Egham Hill
来源：
CHEMICAL GEOLOGY | 1991年 / 91卷 / 01期
关键词：
D O I：
10.1016/0009-2541(91)90016-K
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：
GC-MS analysis was undertaken of a waxy, paraffinic, low-sulphur oil from Korea Bay Basin, apparently deriving mainly from bacterially reworked terrestrial organic matter deposited in a lacustrine environment. In addition to the regular C27-C35 hopanes, a number of pentacyclic triterpanes was identified in the range C29-C32. These components appeared to be members of at least two homologous series, one of which has been previously postulated to be 18-alpha(H)-neohopanes. A further, previously unreported, series is characterized by a relatively intense molecular ion response during GC-MS analysis. A bacterial origin is suggested for these pentacyclic triterpane series, the presence of which may reflect a particular set of sedimentological conditions.
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页码：65 / 79
页数：15
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