盘星藻烷烃生物标志物特征及其热演化试验的初步研究

本文以盘星藻作为典型样品，研究淡水水生单细胞藻类的烷烃生物标志特征及其热解生烃特征。实验结果表明，盘星藻生烃主要分成四大类：正烷烃、稀烃、无环类异戊二烯和二环萜类。ｎＣ１７在正烷烃组分中占５１．６％。检出一组Ｃ２０的二环萜类同分异构体，其含量相当于正浣烃含量的９７．１％。盘星藻热解生烃也以低碳数烃类为主，与高等植物来源的烃类相区别；甾烷Ｃ２９／（Ｃ２７＋Ｃ２８＋Ｃ２９）值为０．５左右，与海洋浮游生     

SIMULATED THERMAL ALTERATION OF STEROLS AND KETO-ALCOHOLS IN MARINE SEDIMENTS OF THE OKINAWA TROUGH

Compositional data on the sterol and alcohol fractions isolated from deep-sea marine sediments from the Okinawa Trough were obtained to determine the relative contribution from. marine and terrestrial inputs. Following extraction, the sterol plus alcohol fraction was isolated by layer chromatography, derivatized with BSTFA and then analysed by capillary GC and GC-MS. A suite of C26-C29 stenols and stanols and C30-C32 keto - alcohols were identified in the sediments. The thermal stability of the compounds in these sediments was studied by heating portions of the surface sediment in glass tubes fpr 16 hours at temperatures from 50℃ to 200℃.The C27 stanol/stenol ratio increased when temperatures went up to 175℃ , but the distribution of C30-C32 Keto - alcohols remained unaffected. At 200℃ most of the sterols and Keto - alcohols were destroyed.     

孢粉生烃热模拟试验研究—Ⅱ：蕨类孢子烷烃组分生物标志物分布

本文研究了长尾复叶耳蕨孢子原生烃类及其热演化试验产烃的烷烃生物标志物分布特征。结果表明蕨类孢子生烃在未成熟－成熟阶段以高碳烃烃类为主，在高－过成熟阶段以低碳烃烃类为主。     

真菌孢子烷烃生物标志物特征及其热演化试验的初步研究

以一种类似地层中无孔多胞孢的现代真菌链格孢属孢子为样品，研究真菌孢子的原生烃烷烃馏分生物标志物及其热解生烃特征。实验结果表明，真菌孢子样品原生烃类的烷烃馏分，主要由正烷烃、异构烷烃和链烯烃相成。正烷烃约占抽提物总量的０．１８％、ｎＣ１９，烷占正烷烃总量的２４．１％。     

Corynespora foveolatum菌孢原生烃类与热解产物烷烃生物标志物特征

以一种类似地层中蠕虫状无孔多胞孢的现代真菌孢子Ｃｏｒｙｎｅｓｐｏｒａ ｊｏｖｅｏｌａｔｕｍ菌孢（竹棒孢）为样品,研究了地层中同类菌孢的原生烷烃生物标志物及其热解生烃特征。实验结果表明,Ｃｏｒｙｎｅｓｐｏｒａ ｆｏｖｅｏｌａｔｕｍ菌孢原生烃类烷烃组分主要由正构烷烃组成,并以ｎＣ２９为主峰碳,ｎＣ２９占正烷烃总量的４２．８％。除含量不高的植烷和姥鲛烷外,几乎不含异烷烃和烯烃,烷基苯和烷基环已烷的含量也