| LIPIDS IN SEDIMENTS FROM BEIBU GULF , SOUTH CHINA SEA AND THEIR GEOCHEMICAL SIGNIFICANCE |
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| 作者姓名： | 江荣华 栾作峰 姜善春 |
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| 作者单位： | Institute of Oceanology，Academia Sinica，Qingdao，266071，Institute of Oceanology，Academia Sinica，Qingdao，266071，Institute of Geochemistry，Academa Sinica，Guiyang，550002 |
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| 基金项目： | Contribution No. 1888 from the Institute of Oceanology, Academia Sinica. This research is partially funded by the Organic Geochemistry Laboratory, Institute of Geochemistry Academia Sinica. |
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| 摘 要： | Examination of solvent-extractable lipids in sediments from Beibu Gulf, South China Sea by capillary gas chromatography (GC) and capillary gas chromatography-mass spectrometry (GC-MS) resulted in the first identifications of β,γ-carotanes and their C19 to C31 homologs in the modern sediments from the China Seas. Distributional features of these ( mainly triterpenoid and steroid hydrocarbons) biomarkers are discussed and the possibility of using these compounds as indicators of source of materials, diagenesis and depositional conditions is explored. It was found that the biomarkers in this region are mixtures of allochthonous (terrigenous and / or crude oil leak or pollu -tion) and autochthonous (marine) organic components. The biomarkers have proved to be of value for understanding sedimentation .
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