| Changes in the Chemical Components of Light Crude Off During Simulated Short Term Weathering |
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| 作者姓名： | MA Qimin LUO Xia YU Zhigang |
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| 作者单位： | [1]College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, P. R. China [2]College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P. R. China |
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| 摘 要： | To unambiguously identify spilled oils and to link them to the known sources are extremely important in settling questions of environmental impact and legal liability. The fate and behavior of spilled oils in the environment depend on a number of physicochemical and biological factors. This paper presents the results regarding changes in chemical composition of light crude oil during simulated short-term weathering based on natural environmental conditions. The results show that the saturated hydrocarbons of the light crude oil mainly distribute between n-C8 and n-C23 and the most abundant n-alkanes are found in the n-C10 to n-C16. The main chemical components of the light crude oil are n-alkanes and isoprenoids. The aromatic compounds are subordinate chemical components. Under the conditions of the weathering simulation experiment,n-alkanes less than n-C12,toluene and 1,3-dimethyl benzene are lost after 1 d weathering,the n-C13,n-C14,naphthalene and 2-methyl-naphthalene are lost on the fifth day of weathering,and n-C15 alkane components show certain weatherproof capability. The ratios n-C17/pristane and n-C18/phytane are unaltered and can be used to identify the source of the light crude oil during the first 8 d of weathering. After 21 d,the ratio pristine/phytane can not provide much information on the source of the spilled light crude oil. Triterpanes（m/z 191） as biomarker compounds of light crude oil are more valuable.
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| 关 键 词： | 原油 风化作用 热敏元件 指纹 |
| 修稿时间： | 2006-09-072007-01-13 |
Changes in the Chemical Components of Light Crude Off During Simulated Short Term Weathering |
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| MA Qimin LUO Xia YU Zhigang.Changes in the Chemical Components of Light Crude Off During Simulated Short Term Weathering[J].Journal of Ocean University of China,2007,6(3):231-236. |
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| Abstract: | |
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| Keywords: | light crude oil weathering GC/MS oil fingerprints RNA thermosensor |
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