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Occurrence and distribution of organochlorine pesticides and polycyclic aromatic hydrocarbons in surface sediments from Qinghai Lake, northeast Qinghai-Tibet plateau, China
Wu, Chenxi1; Xiong, Xiong1,2; Huang, Xiaolong1,2; Xing, Xinli3; Liu, Jiantong1
2014-09-01
Source PublicationJOURNAL OF GREAT LAKES RESEARCH
ISSN0380-1330
Volume40Issue:3Pages:675-683
AbstractOrganochlorine 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.
SubtypeArticle
KeywordOrganochlorine Pesticides Pahs Ddt Dde Atmospheric Transport
DOI10.1016/j.jglr.2014.05.003
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEnvironmental Sciences ; Limnology ; Marine & Freshwater Biology
WOS IDWOS:000342034500023
WOS KeywordPERSISTENT ORGANIC POLLUTANTS ; LONG-RANGE TRANSPORT ; PEARL RIVER DELTA ; MARINE FOOD-WEB ; POLYCHLORINATED-BIPHENYLS ; GLOBAL FRACTIONATION ; SOURCE DIAGNOSIS ; POLAR-REGIONS ; SOUTH CHINA ; TAIHU LAKE
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20361
Collection水环境工程研究中心_期刊论文
Affiliation1.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
GB/T 7714
Wu, Chenxi,Xiong, Xiong,Huang, Xiaolong,et al. Occurrence and distribution of organochlorine pesticides and polycyclic aromatic hydrocarbons in surface sediments from Qinghai Lake, northeast Qinghai-Tibet plateau, China[J]. JOURNAL OF GREAT LAKES RESEARCH,2014,40(3):675-683.
APA Wu, Chenxi,Xiong, Xiong,Huang, Xiaolong,Xing, Xinli,&Liu, Jiantong.(2014).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,40(3),675-683.
MLA Wu, Chenxi,et al."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 40.3(2014):675-683.
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