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题名: Occurrence and distribution of organochlorine pesticides and polycyclic aromatic hydrocarbons in surface sediments from Qinghai Lake, northeast Qinghai-Tibet plateau, China
作者: Wu, Chenxi1; Xiong, Xiong1, 2; Huang, Xiaolong1, 2; Xing, Xinli3; Liu, Jiantong1
关键词: Organochlorine pesticides ; PAHs ; DDT ; DDE ; Atmospheric transport
刊名: JOURNAL OF GREAT LAKES RESEARCH
发表日期: 2014-09-01
DOI: 10.1016/j.jglr.2014.05.003
卷: 40, 期:3, 页:675-683
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences ; Limnology ; Marine & Freshwater Biology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology
英文摘要: Organochlorine pesticides (OCPs) and polycyclic aromiatic hydrocarbons (PAHs) were analyzed in surface sediment samples collected from Qinghai Lake, the largest lake in China, which is situated in the northeast Qinghai-Tibet plateau at an altitude of 3200 m. The concentrations of these pollutants ranged from 0.02 to 1.00 ng/g for hexachlorocyclohexanes (HCHs), from not detected to 0.86 ng/g for dichlorodiphenyltrichloroethanes (DDTs), from 0.26 to 1.73 ng/g for OCPs, and from 366 to 966 ng/g for PAHs. The predominance of alpha-HCH suggests that long-range atmospheric transport is an important source for HCHs. A low alpha- to gamma-HCH ratio (3.87 on average) indicates the possible usage of lindane in the drainage basin. The high percentage of p,p'-DDE and p,p'-DDD and the low percentage of o,p'-DDT indicated significant degradation from previous inputs, and no recent inputs of dicofol derived DDT. Based on the analysis of the component ratios, PAT-Is were found to be primarily from the combustion of biomass and coal-based fossil fuels. Using the Canadian sediment guidelines, PAHs are of greater ecological concern than OCPs in Qinghai Lake. (C) 2014 International Association for Great Lakes Research. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: PERSISTENT ORGANIC POLLUTANTS ; LONG-RANGE TRANSPORT ; PEARL RIVER DELTA ; MARINE FOOD-WEB ; POLYCHLORINATED-BIPHENYLS ; GLOBAL FRACTIONATION ; SOURCE DIAGNOSIS ; POLAR-REGIONS ; SOUTH CHINA ; TAIHU LAKE
语种: 英语
WOS记录号: WOS:000342034500023
ISSN号: 0380-1330
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20361
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China

Recommended Citation:
Wu, Chenxi; Xiong, Xiong; Huang, Xiaolong; Xing, Xinli; Liu, Jiantong.Occurrence and distribution of organochlorine pesticides and polycyclic aromatic hydrocarbons in surface sediments from Qinghai Lake, northeast Qinghai-Tibet plateau, China,JOURNAL OF GREAT LAKES RESEARCH,2014,():
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文件名: Occurrence and distribution of organochlorine pesticides and polycyclic aromatic hydrocarbons in surface sediments from Qinghai Lake, northeast Qinghai-Tibet plateau, China.pdf
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