Characterization of HCHs and DDTs in urban dustfall and prediction of soil burden in a metropolis-Beijing, China

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	Characterization of HCHs and DDTs in urban dustfall and prediction of soil burden in a metropolis-Beijing, China
	Cheng, HX (Cheng, Hangxin); Ma, LL (Ma, Lingling); Zhao, CD (Zhao, Chuandong); Li, XH (Li, Xinghong); Wang, XF (Wang, Xiaofei); Liu, YH (Liu, Yinghan); Yang, K (Yang, Ke)
刊名	CHEMOSPHERE
	2011
卷号	85 期号:3 页码:406-411
关键词	HCHs DDTs Dustfall Flux Fugacity
ISSN号	0045-6535
英文摘要	The concentrations, spatial distribution and compositional patterns of extensively used hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs) in urban dustfall in a metropolis-Beijing are presented in this paper. The potential sources are discussed and soil burdens are predicted based on the fluxes. The hotspots in commercial areas are identified by spatial distribution maps and the fractional value isomers indicates that dustfall in urban Beijing are affected by both current and historical usage of DDTs. It is worth noticing that there is possible application "dicofol-type of DDTs" in Beijing. The measured atmospheric deposition flux is 1.14 x 10(5) ng h(-1) m(-2) for HCHs and 1.47 x 10(5) ng h(-1) m(-2) for DDTs, respectively. However, when compared with atmospheric deposition flux, the volatilization flux estimated from concentrations in soils by fugacity model is significantly lower for HCHs (2.41 ng h(-1) m(-2)) and DDTs (0.07 ng h(-1) m(-2)). The net atmospheric flux to the soil suggests that the levels of HCHs and DDTs in soil are dominated by atmospheric deposition and the urban soil in Beijing would be a sink for HCHs and DDTs in the long term. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
学科主题	环境地质学
WOS关键词	PERSISTENT ORGANIC POLLUTANTS ; ORGANOCHLORINE PESTICIDES ; TECHNICAL HEXACHLOROCYCLOHEXANE ; POLYCHLORINATED-BIPHENYLS ; AIR ; CANADA ; FATE ; OUTSKIRTS ; RESIDUES ; TRENDS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000297661900017
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39457]
专题	中国地质调查局
作者单位	Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Cheng, HX ,Ma, LL ,Zhao, CD ,et al. Characterization of HCHs and DDTs in urban dustfall and prediction of soil burden in a metropolis-Beijing, China[J]. CHEMOSPHERE,2011,85(3):406-411.
APA	Cheng, HX .,Ma, LL .,Zhao, CD .,Li, XH .,Wang, XF .,...&Yang, K .(2011).Characterization of HCHs and DDTs in urban dustfall and prediction of soil burden in a metropolis-Beijing, China.CHEMOSPHERE,85(3),406-411.
MLA	Cheng, HX ,et al."Characterization of HCHs and DDTs in urban dustfall and prediction of soil burden in a metropolis-Beijing, China".CHEMOSPHERE 85.3(2011):406-411.