微生物氧化作用对有机烷烃气碳同位素的影响

被引：4

作者：

陶小晚

李明

张欣欣

田翰

机构：

[1] 中国石油勘探开发研究院

来源：

中国石油勘探 | 2014年 / 19卷 / 03期

关键词：

微生物氧化作用; 烷烃气; 有氧氧化作用; 厌氧氧化作用; 乙烷; 丙烷; 正丁烷; 异丁烷;

D O I：

暂无

中图分类号：

P618.13 [石油、天然气];

学科分类号：

070403 [天体物理学];

摘要：

微生物对烷烃气的氧化作用可分为有氧氧化作用和厌氧氧化作用两种类型,均可导致烷烃气组分碳同位素值变重。微生物对烷烃气组分的氧化具有优选性,一般而言丙烷优先于乙烷、正构烷烃优先于异构烷烃被氧化,并得到热力学及厌氧环境中微生物培养实验两方面的证实。微生物氧化作用的优选性导致碳同位素系列发生部分倒转,但烷烃气组分含量并不一定发生倒转。但在某些氧化环境中,也存在乙烷优先于丙烷氧化的现象,这说明微生物在有氧环境中降解烷烃气的机理不同于厌氧环境,或者是微生物种类的不同导致烷烃气组分发生氧化的优先次序发生了变化。

引用

页码：41 / 49

页数：9

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