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首页> 外文期刊>The Science of the Total Environment >Sources, migration and transformation of antimony contamination in the water environment of Xikuangshan, China: Evidence from geochemical and stable isotope (S, Sr) signatures
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Sources, migration and transformation of antimony contamination in the water environment of Xikuangshan, China: Evidence from geochemical and stable isotope (S, Sr) signatures

机译：锡矿山水环境中锑污染的来源，迁移和转化：来自地球化学和稳定同位素（S，Sr）特征的证据

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摘要

The Xikuangshan (XKS) mine in central China is the largest antimony (Sb) mine in the world. The mining activity has seriously contaminated the waters in the area. To determine the sources, migration and transformation of Sb contamination, 32 samples from groundwater (aquifer water), surface water and mine water were collected for water chemistry, trace element and S_(SO4) and Sr stable isotope analyses. The results showed that the groundwater and surface water were in an oxidized environment The S_(SO4) and Sr isotope compositions in the water indicated that dissolved Sb and SO_4~2 originated from sulfide mineral (Sb_2S_3) oxidation, whereas radiogenic Sr may have been sourced from silicified limestone and stibnite in the Shetianqiao aquifer. Furthermore, a positive correlation between δ~(34)S_(SO4) and δ~(87)Sr values revealed that the Sr, S and Sb in the waters had a common contamination source, i.e., silicified limestone and stibnite, whereas the Sr, S and Sb in rock and ore were sourced from Proterozoic basement elastics. The analysis also indicated that the isotope composition of dissolved SO_4~(2-) had been influenced by slight bacterial SO_4 reduction in the Magunao aquifer. Mining or rock collapse may have caused Shetianqiao aquifer water to contaminate the Magunao aquifer water via mixing. This study has demonstrated that the stable isotopes of ~(34)S_(SO4) and ~(87)Sr, combined with hydrochemical methods, are effective in tracking the sources, migration and transformation of Sb contamination.
机译：中国中部的西矿山（XKS）矿山是世界上最大的锑（Sb）矿山。采矿活动严重污染了该地区的水域。为了确定Sb污染的来源，迁移和转化，从地下水（含水层水），地表水和矿井水中收集了32个样品，用于水化学，微量元素以及S_（SO4）和Sr稳定同位素分析。结果表明，地下水和地表水处于氧化环境。水中的S_（SO4）和Sr同位素组成表明溶解的Sb和SO_4〜2来源于硫化物矿物（Sb_2S_3）的氧化，而放射源的Sr可能来源于从蛇田桥含水层中的硅化石灰石和辉辉石中提取。此外，δ〜（34）S_（SO4）和δ〜（87）Sr值之间呈正相关关系，表明水中的Sr，S和Sb具有共同的污染源，即硅化石灰石和辉锑矿，而Sr岩石和矿石中的S和Sb来源于元古代的地下弹性体。分析还表明，溶解的SO_4〜（2-）的同位素组成已受到Magunao含水层中细菌SO_4轻微还原的影响。采矿或岩石倒塌可能导致蛇田桥含水层水通过混合污染了玛瑙瑙含水层水。这项研究表明，〜（34）S_（SO4）和〜（87）Sr的稳定同位素，结合水化学方法，可有效追踪Sb污染的来源，迁移和转化。

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  • 来源
    《The Science of the Total Environment》 |2016年第1期|114-122|共9页
  • 作者

    Bing Wen; Jianwei Zhou; Aiguo Zhou; Cunfu Liu; Lina Xie;

  • 作者单位

    Geological Survey, China University of Geosciences (Wuhan), Lumo Rd 388, Wuhan 430074, Hubei, People's Republic of China,State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Lumo Rd 388, Wuhan 430074, Hubei, People's Republic of China;

    School of Environmental Studies, China University of Geosciences (Wuhan), Lumo Rd 388, Wuhan 430074, Hubei, People's Republic of China;

    School of Environmental Studies, China University of Geosciences (Wuhan), Lumo Rd 388, Wuhan 430074, Hubei, People's Republic of China;

    School of Environmental Studies, China University of Geosciences (Wuhan), Lumo Rd 388, Wuhan 430074, Hubei, People's Republic of China;

    School of Environmental Studies, China University of Geosciences (Wuhan), Lumo Rd 388, Wuhan 430074, Hubei, People's Republic of China,State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Lumo Rd 388, Wuhan 430074, Hubei, People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    Antimony; Antimony contamination; Groundwater; Stable isotopes;

    机译：锑;锑污染;地下水;稳定同位素;

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