中国湖盆沉积环境与卟啉化合物的分布——卟啉(TBDMSO)_2硅衍生物色谱-质谱研究

PALAEOENVIRONMENTAL SIGNIFICANCE OF PORPHYRIN DISTRIBUTION IN ANCIENT SEDIMENTS, AS DETERMINED BY GC-MS OF (TBDMSO)_2 SILICON DERIVATIVES

用GC-MS、HPLC研究我国湖盆沉积环境中的卟啉化合物分布特征。结果表明;不同的沉积环境各有其特征性卟啉化合物,用卟啉化合物及其指标评价古代湖相沉积环境是可行的。

The GC-MS and HPLC methods were used to determine geoporphyrins in the presentwork. Compounds in HPLC were assigned by coinjections with Gilsonite bitumen,Serpiano oil shale and Boscan oil. Meanwhile the compounds in GC--MS were identified bycoinjection with the porphyrin standards which isolated from Gilsonite bitumens, Serpianooil shale and Boscan oil. The results show that porphyrin distributions in Chinese samples,which were collected ftom different lacustrine palaeoenvironmentS, are pronounced distin-guishable. ssmples from fresh water lacustrine are dominated in C_(32), C_(31) 13, 15--EthanoCAP. Samples from hypersaline water lacustrine are characterised by unknown CAP com-pounds, C_(31) 13, 15-Ethano CAP. However, the coal samples are dominated in aetio com-pounds. These divergences imply there are different porphyrin precursors and porphyrintransformations (in water column and early diagenesis) in different palaeoenvironments.