摘要
本文报道了江汉膏盐盆地第三系高硫原油中新的含硫化合物——七个系列的烷基噻吩类和五个系列的烷基四氢化噻吩类。两类化合物的碳数范围以及分布特征与原油烷烃的分布十分相似;即高C_(20)异构烷基噻吩与四氢化噻吩以及偶碳优势分布。含硫化合物可能是膏盐环境高硫原油的特征性生物标志化合物,是早期阶段硫或硫化氢与烷烃的反应产物。
Reported in this paper is a novel family of biological marker compounds-long chain alkyl-thiophenes and long chain alkyl-thiolanes, which were detected in. the oil sample collected from Tertiary hypersaline sediments of the Jianghan Basin. Seven series of alkyl-thiophene homologues show base ion (mass spectrum) m/z 111; 125; 139; 153; 167; 181 and 195 respectively; five series of alkyl-thiolanes have base ion m/z 101; 115; 129; 143 and 157 respectively. Major characteristics of these compounds are: (1) ab-undant C20 isoprenoid thioplene and thiolane; and (2) even-odd predominance. This distribution pattern is quite similar to that of alkanes. The sulphur-containing com-pounds may be considered as typical biological markers of a hypersaline environment, and perhaps they are products of reaction between elemental sulphur (or hydrogen sul-fide) and alkanes in the very early stage of diagenesis.
出处
《地球化学》
CAS
1986年第2期138-146,共9页
Geochimica
