Transportation and transformation of mercury in a calcine profile in the Wanshan Mercury Mine, SW China

doi:10.1016/j.envpol.2016.10.034

	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
DOI	10.1016/j.envpol.2016.10.034
文献子类	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.
WOS关键词	MINING DISTRICT ; SPECIATION ; WASTES ; SOIL ; SPECTROSCOPY ; METHYLATION ; GUIZHOU ; SPAIN ; EXAFS ; AREA
语种	英语
WOS记录号	WOS:000390734100108
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260364]
专题	中国科学院高能物理研究所
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	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.