Transportation and transformation of mercury in a calcine profile in the Wanshan Mercury Mine, SW China
文献类型：期刊论文
| ; | |
| 作者 | Yin, RS; Gu, CH; Feng, XB; Zheng, LR; Hu, NN; Zheng LR(郑黎荣)
|
| 刊名 | ENVIRONMENTAL POLLUTION
 ; ENVIRONMENTAL POLLUTION
|
| 出版日期 | 2016 ; 2016 |
| 卷号 | 219页码:976-981 |
| 关键词 | Mercury Mobilization Calcine pile Speciation XANES Mercury Mobilization Calcine pile Speciation XANES |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2016.10.034 ; 10.1016/j.envpol.2016.10.034 |
| 文献子类 | 期刊论文 ; Article |
| 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.; 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. |
| 电子版国际标准刊号 | 1873-6424 |
| WOS关键词 | MINING DISTRICT ; SPECIATION ; WASTES ; SOIL ; SPECTROSCOPY ; METHYLATION ; GUIZHOU ; SPAIN ; EXAFS ; AREA ; MINING DISTRICT ; SPECIATION ; WASTES ; SOIL ; SPECTROSCOPY ; METHYLATION ; GUIZHOU ; SPAIN ; EXAFS ; AREA |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000390734100108 ; WOS:000390734100108 |
| 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, Transportation and transformation of mercury in a calcine profile in the Wanshan Mercury Mine, SW China[J]. ENVIRONMENTAL POLLUTION, ENVIRONMENTAL POLLUTION,2016, 2016,219, 219:976-981, 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. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。