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	Observation of organochlorine pesticides in the air of the Mt. Everest region
	Li, J ; Zhu, T ; Wang, F ; Qiu, XH ; Lin, WL
	2006
关键词	organochlorine pesticides global transport air concentrations high mountains backward trajectory technical DDT cold condensation POLYCYCLIC AROMATIC-HYDROCARBONS MOUNTAIN LAKE WATERS WESTERN CANADA HIGH-ALTITUDE OCEANIC AIR HEXACHLOROCYCLOHEXANE POLLUTANTS EMISSION SEDIMENT FLUXES
英文摘要	High Mountains have been Suggested to play an important role in the global transport of persistent organic pollutants, yet observation of these pollutants in high mountains is very limited. In the summer of 2002, air samples were collected at Dingri at a height of 4400m above sea level (m a.s.l.) and at Rongbuk Valley (4976 in a.s.l.) in the Mt. Everest region and analyzed using large volume injection gas chromatography tandem mass spectrometry. The mean concentrations of organochlorine pesticides (OCPs) in the samples were 19.2, 11.2, 7.7, 8.9, 10.4, 27.6, 5.1, 5.1, and 3.7 pgm(-3) for alpha-HCH, beta-HCH, gamma-HCH, HCB, heptachlor, alpha-endosulfan, p,p'-DDE, o,p'-DDT, and p,p'-DDT, respectively. Backward trajectories were used to assess the association between Source regions, transport paths, and observed OCP concentrations. During the sampling period, the o,p'-DDT/p,p'-DDT concentration ratios were observed to be between 1.23 and 1.41, much higher than that of technical DDT, indicating the existence of a DDT source other than technical DDTs in the source regions. (c) 2005 Elsevier Inc. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000234925400005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; Toxicology; SCI(E); CPCI-S(ISTP); PubMed; 54
语种	英语
DOI标识	10.1016/j.ecoenv.2005.04.001
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/199715]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Li, J,Zhu, T,Wang, F,et al. Observation of organochlorine pesticides in the air of the Mt. Everest region. 2006-01-01.

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