Effects of environmental governance in mining areas: The trend of arsenic concentration in the environmental media of a typical mining area in 25 years

doi:10.1016/j.chemosphere.2019.07.010

	Effects of environmental governance in mining areas: The trend of arsenic concentration in the environmental media of a typical mining area in 25 years
	Zhao, Chen 1,3; Yang, Jun 1,3; Zheng, Yuanming 2; Yang, Junxing 3; Guo, Guanghui 3; Wang, Jingyun 1,3; Chen, Tongbin 1,3
刊名	CHEMOSPHERE
	2019-11-01
卷号	235 页码:849-857
关键词	Arsenic mining area Environmental management measures Effectiveness assessment Contaminated environmental media Contaminant concentration change
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2019.07.010
通讯作者	Yang, Jun(yangj@igsnrr.ac.cn)
英文摘要	China has considered different environmental management measures (EMMs) in mining areas. However, their effects remain unclarified. In this study, the achievements and limitations of different EMMs of a typical mining area-Huangchang realgar mine-located in Hunan province were explored. The variations in the arsenic concentrations in the soil, agricultural products, drinking water, and atmosphere in 25 years of EMM implementation were investigated. Source control measures, such as ceasing mining and smelting activities, disposal of waste residues, and purifying wastewater, significantly reduced the arsenic concentrations in the atmosphere and surface water by more than 99%-from 68 mu g m(-3) and 0.42 mg L-1 to 3.63 ng m(-3) and 4.31 mu g L-1, respectively. The arsenic concentrations in agricultural products decreased by more than 78.8%-from 1.32 mg kg(-1) in wheat to 0.28 mg kg(-1) in vegetable and 0.13 mg kg(-1) in maize-after the planting structure adjustment (PSA). However, the chronic daily intake of arsenic via product ingestion was 1.5 times higher than the benchmark dose lower confidence limit. Natural attenuation measures exerted limited effects on soil remediation; the arsenic concentration in the soil decreased insignificantly from 291.9 mg kg(-1) to 213.3 mg kg(-1). With the current attenuation rate, decreasing the soil arsenic concentration to under 30 mg kg(-1) would require 47,900 years. The exceeding contaminant concentration in the resuspended dust, surface runoff, and agricultural products from the contaminated soil must be considered. China's EMMs in mining areas have achieved significant results, but the contaminated soil requires more attention and the PSA should accommodate the dietary habits and economic limits. (C) 2019 Published by Elsevier Ltd.
资助项目	Natural Science Foundation of China[41771510] ; Natural Science Foundation of China[41271478]
WOS关键词	RISK-ASSESSMENT ; CONTAMINATED SOILS ; RAINFALL-RUNOFF ; HEAVY-METALS ; LEAD ; MINE ; WATER ; DUST ; PB ; REMEDIATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000487567000091
资助机构	Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/69559]
专题	中国科学院地理科学与资源研究所
通讯作者	Yang, Jun
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, 11A Datun Rd, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chen,Yang, Jun,Zheng, Yuanming,et al. Effects of environmental governance in mining areas: The trend of arsenic concentration in the environmental media of a typical mining area in 25 years[J]. CHEMOSPHERE,2019,235:849-857.
APA	Zhao, Chen.,Yang, Jun.,Zheng, Yuanming.,Yang, Junxing.,Guo, Guanghui.,...&Chen, Tongbin.(2019).Effects of environmental governance in mining areas: The trend of arsenic concentration in the environmental media of a typical mining area in 25 years.CHEMOSPHERE,235,849-857.
MLA	Zhao, Chen,et al."Effects of environmental governance in mining areas: The trend of arsenic concentration in the environmental media of a typical mining area in 25 years".CHEMOSPHERE 235(2019):849-857.