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

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。

PALAEOENVIRONMENTAL SIGNIFICANCE OF PORPHYRIN DISTRIBUTION IN ANCIENT SEDIMENTS,AS DETERMINED BY GC-MS OF (TBDMSO)2 SILICON DERIVATIVES

The GC-MS and HPLC methods were used to determine geoporphyrins in the present work. Compounds in HPLC were assigned by coinjections with Gilsonite bitumen,Serpiano oil shale and Boscan oil. Meanwhile the compounds in GC-MS were identified by coinjection with the porphyrin standards which isolated from Gilsonite bitumens, Serpiano oil shale and Boscan oil. The results show that porphyrin distributions in Chinese samples,which were collected from different lacustrine palaeoenvironmentS, are pronounced distinguishable. Samples from fresh water lacustrine are dominated in C₃₂, C₃₁ 13, 15-Ethano CAP. Samples from hypersaline water lacustrine are characterised by unknown CAP com-pounds, C₃₁ 13, 15-Ethano CAP. However, the coal samples are dominated in aetio compounds. These divergences imply there are different porphyrin precursors and porphyrin transformations (in water column and early diagenesis) in different palaeoenvironments.