排序方式: 共有12条查询结果,搜索用时 140 毫秒
1.
播娘蒿籽可溶有机质的分布特征及生物化学意义 总被引:1,自引:0,他引:1
播娘蒿籽经溶剂抽提得脂溶性物质,再经正己烷沉淀沥青质,得到可溶有机质.然后采用柱色谱分离方法,将可溶有机质分离为非极性馏分(2.5%)、弱极性馏分(37.3%)和极性馏分(60.2%).这3个馏分经气相色谱-质谱联用仪(GC-MS)分析,检测出7个系列、124种生物标志化合物,且以直链脂肪酸系列生物标志化合物相对丰度最高为特征.研究表明室温保存的播娘蒿籽易受到细菌-酶的降解作用,其各系列生物标志化合物的降解顺序为:正烷烃>五环三萜烷>甾烷>脂肪酸. 相似文献
2.
3.
BIOMARKERS INDICATING SEDIMENTARY PALEOENVIRONMENTS 总被引:3,自引:0,他引:3
Samples involved in this paper are 35 pieces of crude oils and 43 pieces of source rocks, from which a series of biomarkers, capable of indicating paleoecology and paleoenvironment. This will provide a scientific basis for tracing back to sedimenta-y paleoenvironment and paleoecology. 相似文献
4.
5.
6.
The Mazhuang gas reservoir is located in the eastern part of the Junggar Basin. Itsgas-producing pool is averagely 2000 m deep. It is a mid-shallow reservoir. The natural gasrich 2--7% of C_2-C_4 gaseous hydrocarbons is mainly composed of methane. δ~(13)C_(CH_4). valuesare--47----45‰, heavier than microbiogenic gas, and lighter than coal--type gas as well asoil--associated gas. The maternal materials of gas source rocks are primarily from the type-Ⅲ organic matter at the low--mature stage (0.5%相似文献
7.
原油、煤和沉积物中二环烷烃的地球化学意义 总被引:3,自引:0,他引:3
用GC-MS技术分析了中国、新西兰和澳大利亚不同沉积环境形成的原油、岩石和煤样抽提物中的二环烷烃。这些样品普遍含有C_(12)—C_(13),二环烷烃和C_(14)—C_(16)二环倍半萜化合物,共检出22个谱峰。本文讨论了它们的构型、丰度和分布特征及其与沉积环境和热演化的相关性;根据二环烷烃和二环倍半萜烷烃与甾、萜烷的相对丰度、C_(12)—C_(14)与C_(15)和C_(16)之间的相对丰度以及DHR值(补身烷与高补身烷的比值)可判识油气成因类型、形成环境、母源特征及成熟作用的程度。 相似文献
8.
9.
10.