| The distribution of phenylalkanes in the modern sediment associated with gas hydrate from the Gulf of Mexico |
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| 作者姓名： | WANG Cuiping SUN Hongwen SONG Zhiguang ZHANG Tao |
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| 作者单位： | WANG Cuiping,SUN Hongwen,ZHANG Tao(College of Environmental Science and Engineering,Nankai University,Tianjin 300071,China);SONG Zhiguang(State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China) |
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| 基金项目： | Foundation item ： The Chinese Academy of Science under contract Nos KZCX3 - SW - 224 and KGCX2 - SW - 309.Acknowledgements We are grateful to Dr. Chen Duofu for provi- ding the samples from the Gulf of Mexico. Thanks are also given to Mr. Xiang Tongshou and Dr. Liu Jinzhong for their technical assistance in the GC - MS and GC - IRMS analyses and to these anonymous reviewers and editors for their useful comments and corrections. |
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| 摘 要： | Phenylalkanes with carbon numbers between 16 and 19, characterized by the main carbon-18, have been identified in the modern sediments collected from gas hydrate area from the Gulf of Mexico. The structure of phenylalkanes with four isomers for every carbon number was determined by means of their mass spectra and previous studies. The distribution of the series characterized by a low molecular mass was similar to the distribution of n-alkane, alkylcyclohexanes and alkylbenzenes in each sample. There were differences in the distribution of the phenylalkane series between the S - 1, S - 4, S - 7, S - 9 samples and the S - 8, S - 10 and S - 11 samples. The phenylalkanes might be derived from Archaea associated with anaerobic oxidation of methane （AOM） processes in S - 1, S -4, S -7 and S -9 samples according to their distribution resembled with the distribution of the extract from a type of Archaea. The distribution of alkylcyclohexanes and alkylbenzenes in S - 1, S - 4, S - 7 and S - 9 sample was found to be similar to each other. The odd-over-even predominance of alkylcyclohexanes was seen as the input of some bac- terial.
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| 关 键 词： | 天然气水合物 沉积物分布 墨西哥湾 碳原子数 异构体结构 正构烷烃 低分子量 厌氧氧化 |
| 收稿时间： | 2007/7/31 0:00:00 |
| 修稿时间： | 2007/11/2 0:00:00 |
The distribution of phenylalkanes in the modern sediment associated with gas hydrate from the Gulf of Mexico |
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| WANG Cuiping,SUN Hongwen,SONG Zhiguang,ZHANG Tao.The distribution of phenylalkanes in the modern sediment associated with gas hydrate from the Gulf of Mexico[J].Acta Oceanologica Sinica,2008,27(6):71-82. |
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| Authors: | WANG Cuiping SUN Hongwen SONG Zhiguang and ZHANG Tao |
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| Institution: | 1.College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China2.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China |
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| Abstract: | Phenylalkanes with carbon numbers between 16 and 19,characterized by the main carbon-18,have been identified in the mod-em sediments collected from gas hydrate area from the Gulf of Mexico.The structure of phenylalkanes with four isomers for ever-y carbon number was determined by means of their mass spectra and previous studies.The distribution of the series character-ized by a low molecular mass was similar to the distribution of n-alkane,alkylcyclohexanes and alkylbenzenes in each sample.There were differences in the distribution of the phenylalkane series between the S - 1,S - 4,S - 7,S - 9 samples and the S -8,S - 10 and S - 11 samples.The phenylalkanes might be derived from Archaea associated with anaerobic oxidation of methane (AOM) processes in S - 1,S - 4,S - 7 and S - 9 samples according to their distribution resembled with the distribution of the extract from a type of Archaea.The distribution of alkylcyclobexanes and alkylbenzenes in S - 1,S - 4,S - 7 and S - 9 sample was found to be similar to each other.The odd-over-even predominance of alkylcyclohexanes was seen as the input of some bac-terial. |
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| Keywords: | phenylalkane gas hydrate Gulf of Mexico |
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