Transportation and transformation of mercury in a calcine profile in the Wanshan Mercury Mine, SW China
Yin, RS; Gu, CH; Feng, XB; Zheng, LR; Hu, NN; Zheng LR(郑黎荣)
刊名ENVIRONMENTAL POLLUTION
2016
卷号219页码:976-981
关键词Mercury Mobilization Calcine pile Speciation XANES
DOI10.1016/j.envpol.2016.10.034
文章类型期刊论文
英文摘要Calcination of Hg ores has resulted in serious contamination of mercury (Hg) in the environment. To understand the mobilization of Hg in the calcine pile, the speciation of Hg in a profile of a large calcine pile in the Wanshan Mercury Mine, SW China was investigated using the X-ray absorption spectroscopy (XANES), to understand the mobilization of Hg in the calcine pile. Higher concentrations of Hg were observed at the 30-50 cm depth of the profile, corresponding to a cemented layer. This layer is observed in the entire pile, and was formed due to cementation of calcines. Hg species in calcines include cinnabar (alpha a-HgS), metacinnabar (beta-HgS), elemental Hg(0), and minor mercuric chloride (HgCl2), but these Hg species show dramatic changes in the profile. Variations in Hg speciation suggest that extensive mobilization of Hg can occur during weathering processes. We show that the cemented layer can prevent the leaching of Hg and the emission of Hg(0) from the pile. High MeHg concentrations were found near the cemented layer, indicating Hg methylation occurs. This study provides important insights into the environmental risk of Hg in mining areas. (C) 2016 Elsevier Ltd. All rights reserved.
类目[WOS]Environmental Sciences
关键词[WOS]MINING DISTRICT ; SPECIATION ; WASTES ; SOIL ; SPECTROSCOPY ; METHYLATION ; GUIZHOU ; SPAIN ; EXAFS ; AREA
语种英语
WOS记录号WOS:000390734100108
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260364
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
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Yin, RS,Gu, CH,Feng, XB,et al. Transportation and transformation of mercury in a calcine profile in the Wanshan Mercury Mine, SW China[J]. ENVIRONMENTAL POLLUTION,2016,219:976-981.
APA Yin, RS,Gu, CH,Feng, XB,Zheng, LR,Hu, NN,&郑黎荣.(2016).Transportation and transformation of mercury in a calcine profile in the Wanshan Mercury Mine, SW China.ENVIRONMENTAL POLLUTION,219,976-981.
MLA Yin, RS,et al."Transportation and transformation of mercury in a calcine profile in the Wanshan Mercury Mine, SW China".ENVIRONMENTAL POLLUTION 219(2016):976-981.
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