期刊
ENVIRONMENTAL POLLUTION
卷 158, 期 6, 页码 2310-2316出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2010.02.004
关键词
POPs; OCPs; Long-range atmospheric transport; Alpine lakes; Indian monsoon
资金
- National Basic Research Program of China [2009CB421601]
- National Natural Science Foundation of China [40601101, 40873078, 20890111]
High mountains may play significant roles in the global transport of persistent organic pollutants (POPS). This work aims to investigate the levels, patterns and distribution of semi-volatile organoclorine pollutants and to improve the understanding of the long-range atmospheric transport and fate of contaminants on the Tibetan Plateau. A total of 60 fish samples were collected from eight lakes located between 2813 and 4718 m above sea level across the Plateau. Concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) including dichlorodiphenyltrichloroethane and its metabolites (DDTs), hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB) were measured in fish muscle. The results showed that concentrations of DDT, HCH and HCB were comparable to or lower than those found in remote mountains of Europe, Canada and US, while PCB concentrations in fish were, on average, about 4-150 times lower on Tibet than at other mountain areas. The transport and fate of contaminants in the Plateau are significantly influenced by the unique climatological and meteorological conditions, particularly by the summer Indian monsoon and winter westerly jet stream. (C) 2010 Elsevier Ltd. All rights reserved.
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