Characterisation of n-alkanes and their hydrogen isotopic composition in sediments from Lake Qinghai, China |
| |
| Authors: | Yi Duan Baoxiang WuLi Xu Jinxian HeTao Sun |
| |
| Institution: | Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, 382 West Donggang Road, Lanzhou 730000, China |
| |
| Abstract: | The distributions of n-alkanes and their hydrogen isotopic composition (δD) in surface and core sediments from the saline Qinghai Lake were measured to assess whether or not biological source information was recorded in the δD values of n-alkanes. The results indicate that the n-alkane distributions between shallow water surface and core sediments were similar, and closer to those of terrestrial herbaceous plants from the Qinghai Lake surrounding areas, rather than the aquatic plants living in the lake. The n-alkanes in the surface and core sediments had similar mean δD values, ranging from −185‰ to −133‰ and −163‰ to −142‰, respectively. The mean δD values of n-alkanes in the sediments showed that the even n-alkanes were heavier in D compared with the odd homologues. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
