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首页> 外文期刊>RSC Advances >Isotope geochemistry, hydrochemistry, and mineralogy of a river affected by acid mine drainage in a mining area, South China
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Isotope geochemistry, hydrochemistry, and mineralogy of a river affected by acid mine drainage in a mining area, South China

机译：南方矿区受酸性矿区排水影响的河流的同位素地球化学，水化学和矿物学

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摘要

The Hengshi River is a classic example of an acid mine drainage (AMD)-affected river located in the Dabaoshan mining area in southern China. This work utilized stable isotopes (delta S-34 and delta O-18) and hydrochemical data of surface water samples as well as the mineralogical composition of sediment samples to evaluate the processes that affect the sulfate content in water of the Hengshi River. High concentrations of heavy metals (e.g. Fe: >347.78 mg L-1; Zn: >96.48 mg L-1) in the mud impoundment and relatively stable S isotope values (delta S-34: -1.53%(0) similar to -0.88%(0)) in the upper stream suggested that most of the sulfates were derived from sulfide oxidation. Dilution and mineralization could decrease SO42- concentration, but had no significant influence on the isotope composition of SO42 . However, delta S-34 and delta O-18 increased with the decrease of SO42- concentration, accompanied by the elevation of pH and adequate organic matter being available, suggesting that bacterial (dissimilatory) sulfate reduction played an important role in the transformation of sulfate downstream. The methods used in this study can also be used in other natural systems. Furthermore, it is important to understand the causes of environmental pollution and to help environmental remediation.
机译：恒石河是位于中国南部达巴山矿区的酸性矿山排水（AMD）的河流的典型例子。该作品利用稳定同位素（Delta S-34和Delta O-18）和地表水样的水化学数据以及沉积物样品的矿物学组成，以评估影响恒井河水中硫酸盐含量的过程。高浓度的重金属（例如Fe：> 347.78mg L-1; Zn：> 96.48mg L-1）在泥浆蓄水中和相对稳定的S同位素值（Delta S-34：-1.53​​％（0）类似于 - 上游中的0.88％（0））表明大部分硫酸盐源自硫化物氧化。稀释和矿化可以降低SO42浓度，但对SO42的同位素组合物没有显着影响。然而，Delta S-34和Delta O-18随着SO42-浓度的降低而增加，伴随着pH的pH和适当有机物的升高，表明细菌（含胶质）硫酸盐降低在硫酸盐的转化中起重要作用下游。本研究中使用的方法也可用于其他自然系统。此外，了解环境污染的原因并帮助环境修复非常重要。

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  • 来源
    《RSC Advances》 |2017年第68期|共9页
  • 作者

    Xia Di; Ye Han; Xie Yingying; Yang Chengfang; Chen Meiqin; Dang Zhi; Yi Xiaoyun; Lu Guining;

  • 作者单位

    South China Univ Technol Sch Environm &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Peoples R China;

    South China Univ Technol Sch Environm &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy Guangzhou 510006 Guangdong Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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