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The impact of an abandoned mercury mine on the environment in the Xiushan region, Chongqing, southwestern China
Xiaohang Xu;  Yan Lin;  Bo Meng;  Xinbin Feng;  Zhidong Xu;  Yuping Jiang;  Weilu Zhong;  Yanhai Hu;  Guangle Qiu
2018
Source PublicationApplied Geochemistry
Volume88Issue:Part BPages:267-275
Abstract

Mercury contamination is a serious problem in the Hg mining area of Xiushan County, Chongqing, southwestern China. The concentrations of total mercury (THg) and methylmercury (MeHg) in paddy soil, surface water, and rice (grain) samples were determined to investigate the regional distribution of Hg contamination. Simultaneously, gaseous elemental Hg (GEM) in ambient air near the sampling sites was measured. The total Hg concentrations in surface water were highly elevated, ranging from 13 to 2390 ng/L, and the total MeHg concentrations varied between 0.17 and 1.1 ng/L. The dissolved Hg and MeHg concentrations in surface water ranged from 4.7 to 470 ng/L and 0.14-0.35 ng/L, respectively. High THg and MeHg concentrations were also obtained in paddy soils from mining areas, ranging from 0.45 to 68 mu g/g and 0.13-4.8 ng/g, respectively. Similar to the high concentrations in water and soil, the THg concentration in rice (grain) ranged from 4.7 to 550 ng/g and MeHg from 2.9 to 26 ng/g. Elevated Hg concentrations in rice, as a staple food of local residents, confirmed that rice consumption could be a vital pathway for MeHg exposure to native people. Humic acid and fulvic acid had significant correlations with soil MeHg, implying that they have important roles that influence MeHg production in soil. The spatial distribution characteristics of Hg and MeHg pollution in the local environment indicated their origins from historic Hg mining sites in the Xiushan area.

KeywordMercury methylmercury paddy Soil surface Water ricehg Mining
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8668
Collection环境地球化学国家重点实验室
Affiliation1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Norwegian Institute for Water Research, Oslo, 0349, Norway
4.No.6 Geological Unit Team, Henan Provincial Non-ferrous Metals Geological and Minaral Resources Bureau, Luoyang 471002, China
5.Henan Province Rock & Mineral Testing Centre, Zhengzhou 40012, China
Recommended Citation
GB/T 7714
Xiaohang Xu;Yan Lin;Bo Meng;Xinbin Feng;Zhidong Xu;Yuping Jiang;Weilu Zhong;Yanhai Hu;Guangle Qiu. The impact of an abandoned mercury mine on the environment in the Xiushan region, Chongqing, southwestern China[J]. Applied Geochemistry,2018,88(Part B):267-275.
APA Xiaohang Xu;Yan Lin;Bo Meng;Xinbin Feng;Zhidong Xu;Yuping Jiang;Weilu Zhong;Yanhai Hu;Guangle Qiu.(2018).The impact of an abandoned mercury mine on the environment in the Xiushan region, Chongqing, southwestern China.Applied Geochemistry,88(Part B),267-275.
MLA Xiaohang Xu;Yan Lin;Bo Meng;Xinbin Feng;Zhidong Xu;Yuping Jiang;Weilu Zhong;Yanhai Hu;Guangle Qiu."The impact of an abandoned mercury mine on the environment in the Xiushan region, Chongqing, southwestern China".Applied Geochemistry 88.Part B(2018):267-275.
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