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通过对中国典型的淡水湖相（茂名）和盐水湖相沉积环境（江汉）岩样的生物标志化合物单体碳同位素数据的分析，探讨了产生两环境化合物的来源和沉积环境．研究发现茂名油页岩中姥鲛烷和植烧来源于叶绿素α的植基侧链，含量高的４－甲基甾烷通过与藿烷和甾烷的同位素对比，推测其源与细菌有关．江汉油页岩中的化合物明显不同于茂名油页岩，伽马蜡烷（Ｇａｍｍａｃｅｒａｎｅ）来源于喜盐的原生生物，δ~(１３)Ｃ值为－２５‰左右，与报道的值一致．植烷和姥鲛烷与来源于浮游植物的甾烷及４－甲基甾烷接近，说明其三者均来源于浮游藻类．报道了卟啉化合物的ＧＣ－ＩＲＭＳ碳同位素测定方法及中国样品中的卟啉碳同位素值．江汉盆地的ＤＰＥＰ，ｅｔｉｏ δ~(１３)Ｃ值相似，来自于叶绿素．而茂名油页岩中ｅｔｉｏ和Ｃ_(３１)ＤＰＥＰ较Ｃ_(３２)ＤＰＥＰ轻，说明Ｃ_(３２)ＤＰＥＰ来源于叶绿素ａ，而ｅｔｉｏ和Ｃ_(３１)ＤＰＥＰ有别的来源．
Based on the analysis of single carbon isotope data of biomarkers of typical freshwater lacustrine facies (Maoming) and lacustrine facies sedimentary environment (Jianghan) in China, the origin and sedimentary environment of two environmental compounds were discussed. The study found that Maoming oil shale pristane and plantation derived from the chlorophyll α-based phytyl side chain, high content of 4-methyl sterane and hopane and sterane by isotope comparison, speculated that the source and bacteria. The compounds in Jianghan oil shale are obviously different from those in Maoming oil shale. Gammacerane is originated from the salt-like protozoa. The δ 13 C value is about -25 ‰, which is consistent with the reported value. Phytan and pristane are close to steranes and 4-methyl steranes derived from phytoplankton, indicating that all three originate from phytoplankton. The determination of porphyrin compounds by GC-IRMS and the porphyrin carbon isotope values in Chinese samples are reported. The DPEP and etio δ ~ (13) C values in Jianghan Basin are similar and come from chlorophyll. However, etio and C_ (31) DPEP in Maoming oil shale are lighter than C_ (32) DPEP, indicating that C_ (32) DPEP is derived from chlorophyll a and that etio and C_ (31) DPEP have different origins.