Geochemical analyses of a Himalayan snowpit profile: implications for atmospheric pollution and climate
文献类型：期刊论文
| 作者 | Xie, SC; Yao, TD; Kang, SC; Xu, BQ; Duan, KQ; Thompson, LG |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2000 |
| 卷号 | 31期号:1页码:15-23 |
| 关键词 | Dasuopu glacier middle-upper troposphere summer monsoon petroleum residues pollution aeolian transport |
| ISSN号 | 0146-6380 |
| 通讯作者 | Xie, SC() |
| 英文摘要 | Organic compounds, extracted from snow and ice from the Dasuopu glacier, on the Qinghai-Tibetan Plateau in Southwest China at an altitude of 7000 m above sea level (asl), were identified through pre-enrichment, solvent extraction and subsequent CC-MS analysis. The average concentration of the extractable organic matter reached 45.4 mu g/l. C-15-C-33 n-alkanes, C-6-C-18 n-alkanoic acids, C-24-C-31 n-alkan-2-ones and esters were derived from subtropical higher plants, as well as marine algae and bacteria. Organic compounds, indicative of petroleum residues such as automobile and diesel exhaust were also unexpectedly identified in the glacial snow. These included n-alkanes, alkylcyclohexanes, pristane, phytane, extended C-19-C-29 tricyclic terpanes, a C-24 tetracyclic terpane, C-27-C-35 alpha beta hopanes, and C-27-C-29 steranes. Their presence indicates that the remote mountainous region and, to some extent, the middle-upper troposphere are polluted by human activities. Concentrations of some organic compounds, and total extractable organic matter, display a weak seasonal variation, postulated to be related to the location of middle-upper troposphere. The C-17 n-alkane abundance and some molecular ratios exhibit a stronger seasonal variation, which may signify strong climatic change. (C) 2000 Elsevier Science Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | PARTICLE-SIZE DISTRIBUTIONS ; WESTERN UNITED-STATES ; ORGANIC-MATTER ; PARTICULATE MATTER ; AEROSOLS ; ATLANTIC ; TROPOSPHERE ; URBAN ; CONSTITUENTS ; POLLUTANTS |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000084958900002 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557985 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Xie, SC |
| 作者单位 | 1.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Glaciol & Geocryol, Lanzhou, Peoples R China 3.Ohio State Univ, Byrd Polar Res Ctr, Columbus, OH 43210 USA |
| 推荐引用方式 GB/T 7714 | Xie, SC,Yao, TD,Kang, SC,et al. Geochemical analyses of a Himalayan snowpit profile: implications for atmospheric pollution and climate[J]. ORGANIC GEOCHEMISTRY,2000,31(1):15-23. |
| APA | Xie, SC,Yao, TD,Kang, SC,Xu, BQ,Duan, KQ,&Thompson, LG.(2000).Geochemical analyses of a Himalayan snowpit profile: implications for atmospheric pollution and climate.ORGANIC GEOCHEMISTRY,31(1),15-23. |
| MLA | Xie, SC,et al."Geochemical analyses of a Himalayan snowpit profile: implications for atmospheric pollution and climate".ORGANIC GEOCHEMISTRY 31.1(2000):15-23. |
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来源：寒区旱区环境与工程研究所
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