| 太湖沉积物中长链脂肪酸甲酯化合物的检出及意义 |
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| 引用本文： | 瞿文川,王苏民,吴瑞金,张平中,陈践发.太湖沉积物中长链脂肪酸甲酯化合物的检出及意义[J].湖泊科学,1999,11(3):245-250. |
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| 作者姓名： | 瞿文川 王苏民 吴瑞金 张平中 陈践发 |
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| 作者单位： | 中国科学院南京地理与湖泊研究所!南京210008(瞿文川，王苏民，吴瑞金)，中国科学院兰州地质研究所!兰州730000(张平中，陈践发) |
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| 基金项目： | 中国科学院湖沼专项资助项目 |
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| 摘 要： | 在太湖表层沉积物中检测出丰度较高的一系列长链脂肪酸甲酯化合物，采用标准图谱与质谱解析相结合的方法进行鉴定，长链脂肪酸甲酯化合物有类似正构烷烃的分布型式，碳数分布范围为Ｃ１４－Ｃ３４，主峰碳为Ｃ１６，具有明显的偶碳优势。
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| 关 键 词： | 太湖 沉积物 脂肪酸甲酯 酸碱度 化合物 |
| 收稿时间： | 1997/1/20 0:00:00 |
| 修稿时间： | 1997/6/10 0:00:00 |
Identification and Significance of Long Chain Fatty Acid Methyl Ester in the Surface Sediment of Taihu Lake |
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| QU Wen-chuan,WANG Su-min,ZHANG Ping-zhong,CHEN Jian-fa and WU Rui-jing.Identification and Significance of Long Chain Fatty Acid Methyl Ester in the Surface Sediment of Taihu Lake[J].Journal of Lake Science,1999,11(3):245-250. |
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| Authors: | QU Wen-chuan WANG Su-min ZHANG Ping-zhong CHEN Jian-fa and WU Rui-jing |
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| Institution: | Nanjing Institute of Geography & Limnology. Chinese Academy of Sciences, Nanjing 210008,Nanjing Institute of Geography & Limnology. Chinese Academy of Sciences, Nanjing 210008,Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000,Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000 and Nanjing Institute of Geography & Limnology. Chinese Academy of Sciences, Nanjing 210008 |
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| Abstract: | The aromatic hydrocarbon fraction of the surface sediment in the west and east part of Taihu Lake was analyzed by GC-MS. As a result, a series of long chain fatty acid methyl esters was first found. Distribution of the carbon number of fatty acid methyl esters in the samples was from C_14 to C-34 maximizing at C_16 with a strong even to odd carbon preference. Their mass spectrum char- acteristics are that base peaks were M/Z 74, 87 and characteristic ions were M/Z 143, 199, M~+, M-43~+. These ion existence was confirmed by fragmenting analyses of fatty acid methy esters. The origin of the long chain fatty acid methy esters in the sediment of Taihu Lake was also stud- ied, which may be related to biochemical process. The result showed that the long chain fatty acid methyl esters was probably an important biological marker to study the acidity of the lake sediment. |
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| Keywords: | Taihu Lake fatty acid methyl esters sediment acidity |
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