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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)
2016
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
EISSN1873-6424
Volume219Pages:976-981
SubtypeArticle
AbstractCalcination 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.
KeywordMercury Mobilization Calcine pile Speciation XANES
DOI10.1016/j.envpol.2016.10.034
WOS KeywordMINING DISTRICT ; SPECIATION ; WASTES ; SOIL ; SPECTROSCOPY ; METHYLATION ; GUIZHOU ; SPAIN ; EXAFS ; AREA
Indexed BySCI
Language英语
WOS SubjectEnvironmental Sciences
WOS IDWOS:000390734100108
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/260364
Collection中国科学院高能物理研究所
Affiliation中国科学院高能物理研究所
Recommended Citation
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.
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