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学科主题: 地理学::自然地理学
题名: Spatial distribution of the persistent organic pollutants across the Tibetan Plateau and its linkage with the climate systems: a 5-year air monitoring study
作者: Wang, XP (Wang, Xiaoping)1, 2; Ren, J (Ren, Jiao)1; Gong, P (Gong, Ping)1, 2; Wang, CF (Wang, Chuanfei)1; Xue, YG (Xue, Yonggang)1; Yao, TD (Yao, Tandong)1, 2; Lohmann, R (Lohmann, Rainer)3
通讯作者: Wang, XP
刊名: ATMOSPHERIC CHEMISTRY AND PHYSICS
发表日期: 2016
DOI: 10.5194/acp-16-6901-2016
卷: 16, 期:11, 页:6901-6911
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: The Tibetan Plateau (TP) has been contaminated by persistent organic pollutants (POPs), including legacy organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) through atmospheric transport. The exact source regions, transport pathways and time trends of POPs to the TP are not well understood. Here polystyrene-divinylbenzene copolymer resin (XAD)-based passive air samplers (PASs) were deployed at 16 Tibetan background sites from 2007 to 2012 to gain further insight into spatial patterns and temporal trends of OCPs and PCBs. The southeastern TP was characterized by dichlorodiphenyltrichloroethane (DDT)-related chemicals delivered by Indian monsoon air masses. The northern and northwestern TP displayed the greatest absolute concentration and relative abundance of hexachlorobenzene (HCB) in the atmosphere, caused by the westerly-driven European air masses. The interactions between the DDT polluted Indian monsoon air and the clean westerly winds formed a transition zone in central Tibet, where both DDT and HCB were the dominant chemicals. Based on 5 years of continuous sampling, our data indicated declining concentrations of HCB and hexachlorocyclohexanes (HCHs) across the Tibetan region. Inter-annual trends of DDT class chemicals, however, showed less variation during this 5-year sampling period, which may be due to the ongoing usage of DDT in India. This paper demonstrates the possibility of using POP fingerprints to investigate the climate interactions and the validity of using PAS to derive inter-annual atmospheric POP time trends.
语种: 英语
WOS记录号: WOS:000378354600015
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7863
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA

Recommended Citation:
Wang, XP ,Ren, J ,Gong, P ,et al. Spatial distribution of the persistent organic pollutants across the Tibetan Plateau and its linkage with the climate systems: a 5-year air monitoring study[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2016,16(11):6901-6911.
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