Effects of an abandoned Pb-Zn mine on a karstic groundwater reservoir
文献类型：期刊论文
| 作者 | Qin, Wenjing1,2; Han, Dongmei1,3 ; Song, Xianfang1,3; Engesgaard, Peter4
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| 刊名 | JOURNAL OF GEOCHEMICAL EXPLORATION
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| 出版日期 | 2019-05-01 |
| 卷号 | 200页码:221-233 |
| 关键词 | Abandoned Pb-Zn mine Karst water Trace elements Arsenic |
| ISSN号 | 0375-6742 |
| DOI | 10.1016/j.gexplo.2018.09.007 |
| 通讯作者 | Han, Dongmei(handm@igsnrr.ac.cn) |
| 英文摘要 | The release and transport of metals in active mines pose a threat to water quality when mine sites become abandoned. Karst aquifer systems are especially vulnerable due to their ability to quick transport polluted water over large distances through surface and subsurface routes. Surface and groundwater samples collected from the Guilin-Yangshuo Basin in southwestern China were analyzed for delta O-18 and delta H-2 of water, major and trace elements, including Sr, pH, temperature, and electrical conductivity to gain an understanding of how an abandoned Pb-Zn mine and its tailing deposits influence the groundwater quality of a downgradient karst carbonate aquifer. The delta O-18 and delta H-2 values of the water samples indicate that the karst aquifer is dominantly recharged by local precipitation during the wet season and additionally by water from upstream mountainous areas during the dry period. Severe heavy metal contamination (9154, 1081, 37 and 55 mu g/L of Zn, Mn, Ni and Cd, respectively) was detected in the mine drainage water. Ninety-one percent of the downstream surface samples and 67% of the groundwater samples collected during the dry season exceeded the limit value for As (10 mu g/L) according to the China Standards for Drinking Water Quality. Factor analysis was applied, and showed the river and groundwater were affected by the Pb-Zn mine and its tailing deposits and by carbonate dissolution. The Sidi River plays an important role in trace element transport, which supported by a strong correlation between sulfate and strontium (with r(2) = 0.85 in the dry season; r(2) = 0.94 in the wet season). The strong acid generated during sulfide oxidation of the mine tailings is neutralized by carbonate rock dissolution, resulting in neutral to alkaline water which hinders the mobility of trace elements. However, the increasing sulfate contents and the elevated total trace element concentrations (from undetectable to 1503 mu g/L except for the mine drainage with 10,350 mu g/L) confirm the release of toxic metals into the water system. In addition, adsorbed arsenate anions may exchange with dissolved carbonate anions and be released into the groundwater. |
| WOS关键词 | MINING ACTIVITY ; GEOCHEMICAL EVOLUTION ; RIVER WATERS ; HEAVY-METALS ; CARBONATE ; QUALITY ; BASIN ; POLLUTION ; SOIL ; CONTAMINATION |
| 资助项目 | Zhu Kezhen Outstanding Young Scholars Program in the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS)[2015RC102] ; Youth Innovation Promotion Association, CAS[2012040] ; Development Services of Feature Institute Program of CAS[TSYJS01] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000460904500018 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Zhu Kezhen Outstanding Young Scholars Program in the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS) ; Youth Innovation Promotion Association, CAS ; Development Services of Feature Institute Program of CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/49339]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Han, Dongmei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Univ Copenhagen UCPH, Dept Geosci & Nat Resource Management IGN, DK-1350 Copenhagen, Denmark |
| 推荐引用方式 GB/T 7714 | Qin, Wenjing,Han, Dongmei,Song, Xianfang,et al. Effects of an abandoned Pb-Zn mine on a karstic groundwater reservoir[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2019,200:221-233. |
| APA | Qin, Wenjing,Han, Dongmei,Song, Xianfang,&Engesgaard, Peter.(2019).Effects of an abandoned Pb-Zn mine on a karstic groundwater reservoir.JOURNAL OF GEOCHEMICAL EXPLORATION,200,221-233. |
| MLA | Qin, Wenjing,et al."Effects of an abandoned Pb-Zn mine on a karstic groundwater reservoir".JOURNAL OF GEOCHEMICAL EXPLORATION 200(2019):221-233. |
入库方式： OAI收割
来源：地理科学与资源研究所
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