Component characteristics of organic matter in hydrothermal barnacle shells from Southwest Indian Ridge |
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| Authors: | HUANG Xin ZENG Zhigang CHEN Shuai YIN Xuebo WANG Xiaoyuan ZHAO Huijing YANG Baoju RONG Kunbo and MA Yao |
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| Institution: | 1.Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100049, China2.Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: | In 2008-2009, hydrothermal barnacle and sediment samples were collected from the Southwest Indian Ridge during a survey of the China Ocean Mineral Resources R&D Association (COMRA). Samples were analyzed by gas chromatography-mass spectrometer (GC-MS), revealing the main organic constituents of hydrothermal barnacle and sediment to be fatty acids and alkylbenzenes. N-alkanes which possessed obvious even carbon advantage were also detected in hydrothermal sediment. The high concentrations of aromatic compounds might be the result of macromolecular thermal alteration. Microorganism in the submarine hydrothermal ecosystem, especially those related to sulfur metabolism, might be the source of the high concentrations of fatty acids detected in these samples. In high temperature and high pressure hydrothermal environments, n-alkanes which possessed obvious even carbon advantage might originate from thermal alteration of carboxylic acids and other lipid compounds. |
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| Keywords: | Southwest Indian Ridge hydrothermal barnacle shell hydrothermal sediment organic matter |
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