本帖最后由 诺瓦尔ior 于 2018-1-19 11:40 编辑
The distribution and composition of hydrocarbons in sediments of the South Mid-Atlantic Ridge
Author HUANG Xin GuangdongProvince Key Laboratory of Coastal Ocean Variation and Disaster Prediction,Guangdong Ocean University, Zhanjiang, China CHEN Shuai KeyLaboratory of Marine Geology and Environment, Institute of Oceanology, ChineseAcademy of Sciences, Qingdao, China; Laboratory for Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology, Qingdao, China WANG Xiaoyuan Key Laboratory of Marine Geology and Environment, Institute ofOceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for MarineMineral Resources, Qingdao National Laboratory for Marine Science andTechnology, Qingdao, China ZHANG Shuwen Guangdong Province Key Laboratory of Coastal Ocean Variation andDisaster Prediction, Guangdong Ocean University, Zhanjiang, China CHEN Fajin GuangdongProvince Key Laboratory of Coastal Ocean Variation and Disaster Prediction,Guangdong Ocean University, Zhanjiang, China PU Xiaoqiang Guangdong Province Key Laboratory of Coastal Ocean Variationand Disaster Prediction, Guangdong Ocean University, Zhanjiang, China
Abstract: | Sediment samples obtained from the South Mid-Atlantic Ridge are analyzed by a gas chromatography-mass spectrometer (GC-MS) for the abundances and distributions of hydrocarbons. The hydrocarbons in the samples exhibit a bimodal distribution of n-alkanes and are rich in 3-methylalkanes, 8-methylalkanes and 2, 4, (n-1)-trimethylalkanes, which may be the result of metabolic activity of benthic microorganism. Terpanes, hopanes and steranes are all enriched in the samples, which also support the microbial origin of hydrocarbons in samples. Bitumen and hydrocarbons in the samples show a trend that the contents are the highest in the Samples 22V-TVG10 and 26V-TVG05 collected near hydrothermal areas, and the lowest in samples 22IV-TVG01, 22V-TVG11, and 22V-TVG14 collected far from the hydrothermal areas, which suggest the possible influence on the samples by hydrothermal activity.
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Key words: Hydrocarbons SouthMid-Atlantic Ridge sediment hydrothermal activity
HUANG Xin,CHEN Shuai,WANG Xiaoyuan,ZHANG Shuwen,CHEN Fajin,PU Xiaoqiang. 2018. The distribution and composition of hydrocarbons in sediments of the South Mid-Atlantic Ridge. Acta Oceanologica Sinica, (1):89-96
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