Mercury concentrations and air/soil fluxes in Wuchuan mercury mining district, Guizhou province, China

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	Mercury concentrations and air/soil fluxes in Wuchuan mercury mining district, Guizhou province, China
	Wang, SF ; Feng, XB ; Qiu, GG ; Shang, LH ; Li, P ; Wei, ZQ
刊名	ATMOSPHERIC ENVIRONMENT
	2007
卷号	41 期号:28 页码:5984-5993
关键词	air/soil Hg exchange air Hg concentration source sink guizhou province
ISSN号	1352-2310
通讯作者	Feng, XB, Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
中文摘要	Wuchuan Hg mine, located in the Circum-Pacific Global Mercuriferous Belt, is one of the important Hg production centers in Guizhou province, China. Soil Hg concentrations in this area are elevated by 2-4 orders of magnitude compared to the national background value in soil which is 0.038 mu g g(-1). In situ air Hg concentrations and air/soil Hg fluxes were measured at five sampling sites in Wuchuan Hg mining area (WMMA) from 19 to 26 December 2003 and from 18 to 25 December 2004. The results showed that air Hg concentrations were 2-4 orders of magnitude higher than those observed in background areas in Europe and North America due to a large amount of Hg emission from artisanal Hg smelting activities. The average in situ Hg fluxes at site Laohugou, Jiaoyan, Luoxi, Sankeng and Huanglong were -5493, 124, -924, -13 and 140 ng m(-2) h(-1), respectively. Diurnal pattern of Hg flux was not found and a number of negative Hg fluxes were observed in our sampling campaigns. The correlations between Hg fluxes and meteorological parameters such as solar irradiation, air temperature, soil temperature and relative humidity and air Hg concentrations were investigated. The commonly observed significant correlations between Hg fluxes and meteorological parameters observed in many previous studies were not obtained in WMMA. However, significantly negative correlations between Hg flux and air Hg concentration were observed at all sites. Our study demonstrated that highly elevated air Hg concentrations could suppress Hg emission processes even from Hg-enriched soil. At specific conditions in WMMA, air Hg concentrations play a dominant role in controlling Hg emission from soil. (C) 2007 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences; Meteorology & Atmospheric Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000249639600014
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54615]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Wang, SF,Feng, XB,Qiu, GG,et al. Mercury concentrations and air/soil fluxes in Wuchuan mercury mining district, Guizhou province, China[J]. ATMOSPHERIC ENVIRONMENT,2007,41(28):5984-5993.
APA	Wang, SF,Feng, XB,Qiu, GG,Shang, LH,Li, P,&Wei, ZQ.(2007).Mercury concentrations and air/soil fluxes in Wuchuan mercury mining district, Guizhou province, China.ATMOSPHERIC ENVIRONMENT,41(28),5984-5993.
MLA	Wang, SF,et al."Mercury concentrations and air/soil fluxes in Wuchuan mercury mining district, Guizhou province, China".ATMOSPHERIC ENVIRONMENT 41.28(2007):5984-5993.