何碧红,赵晓岚,丁哲,谢伟雪

• 1:兰州资源环境职业技术大学黄河流域生态环境产教融合研究院
• 2:兰州大学核科学与技术学院
• 3:中国科学院西北生态环境资源研究院

摘要(Abstract)：

对白银市不同区域土壤中主要的重金属污染物进行采样分析，结果表明矿区土壤重金属含量最高，东大沟和西大沟污水灌溉区土壤重金属含量也显著高于甘肃省土壤背景值。地质积累指数结果表明，矿区、西大沟和东大沟区域土壤受铜、铅、锌三种重金属中度至重度污染的占比较高，而五个区域土壤样品中镉的I_(geo)值均较高。化学连续提取结合铅同位素组成的分析结果表明白银地区有色金属采矿、冶炼活动所释放进入土壤的重金属其活性较高，可能通过食物链进入人体内，存在较高的生态风险。不同区域土壤中重金属的非致癌风险为矿区>东大沟>西大沟>东大沟与西大沟之间>黄河水灌溉区，铅是当地居民非致癌风险的主要贡献者。矿区的HI值>1,为3.12,其余区域均小于1,说明矿区土壤中的重金属对儿童存在较高的非癌症健康风险，而其余四个区域可能不会对儿童造成重大的非癌症健康风险。

关键词(KeyWords)： 土壤;重金属;铅同位素;化学连续提取;健康风险

Abstract:

Keywords:

基金项目(Foundation): 甘肃省高等学校创新基金项目(2021A-247);; 兰州资源环境职业技术大学2022年度校级重大科研项目(X2022ZD-06)

作者(Author): 何碧红,赵晓岚,丁哲,谢伟雪

DOI: 10.14068/j.ceia.2023.03.013

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