莫昌琍,吴丰昌,符志友,朱静,冉靓

• 1:中国科学院地球化学研究所 环境地球化学国家重点实验室
• 2:中国科学院大学
• 3:贵阳学院教学设备及实验管理中心
• 4:中国环境科学研究院

摘要(Abstract)：

通过实地采样调查和对样品进行实验室分析,研究了湖南锡矿山锑矿区采矿区、冶炼区和尾矿区附近农用土壤的锑、砷及汞的污染状况。结果表明这3个区域8个采样点的农用土壤均受到这3种重金属元素较高浓度的污染,土壤中锑、砷及汞的浓度分别为:141.92～8733.26、14.95～363.19和0.16～5.68 mg/kg,均远高于湖南土壤中这3种元素的背景值。锑与砷的平均浓度是荷兰土壤中锑、砷最大允许含量的695和2.3倍,而锑矿区农用土壤中汞的平均含量与荷兰土壤中汞最大允许含量2.2 mg/kg接近。在3个研究区域中,冶炼区的土壤中这3种元素的浓度均为最高,采矿区和尾矿区的依次减少。通过用地累积指数法评估锑矿区农用土壤中上述3种重金属污染程度发现,锑矿的开采和冶炼是矿区农用土壤受到重金属严重污染的根本原因,其中锑对土壤重金属污染的贡献最大。

关键词(KeyWords)： 锑;砷;汞;农用土壤;污染评价;锡矿山;锑矿区

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(批准号:40632011);; 贵州省科学技术基金资助项目(编号:黔科合J字[2011]2034号);; 贵阳学院院级基金(201011)

作者(Author): 莫昌琍,吴丰昌,符志友,朱静,冉靓

DOI: 10.16461/j.cnki.1000-4734.2013.03.005

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