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[量化土壤重金属对生态和健康风险来源的贡献]

Yong-Xing Pan¹, Meng Chen^1,2, Xiao-Tong Wang³

¹College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Huan jing ke xue= Huanjing kexue

|March 12, 2024

概括

这项研究量化了采矿流域的土壤重金属风险,确定了采矿活动和未知来源作为主要贡献者. 对未知来源的进一步研究对于有效控制土壤污染至关重要.

科学领域:

环境科学环境科学
地质化学地质化学
风险评估风险评估

背景情况:

土壤重金属污染对生态和人类健康构成重大风险.
识别污染源对于有效的风险管理和减缓策略至关重要.

研究的目的:

量化与Pb-Zn矿山流域土壤重金属来源相关的风险.
用先进的模型识别和分配土壤重金属的来源.
开发一个综合风险评估模型,以准确识别来源.

主要方法:

生态风险评估 (RI) 和人类健康风险评估 (HRA).
使用绝对主要组件-多重线性回归 (APCS-MLR) 和随机森林 (RF) 模型进行源分配.
一个结合 RI,HRA 和 APCS-MLR 的风险评估模型.

主要成果:

Pb,Zn,Cu和Cd的含量超过了环境查值,这表明污染.
确定Pb,Cr和As是主要的健康风险因素,儿童面临更高的风险.
确定了三个主要来源:采矿活动,土壤母体物质和未知来源.
采矿活动是Pb,Zn,Cu和Cd的主要来源,而未知来源控制了Cr和As.
生态和非致癌风险主要来自采矿和母体材料来源;致癌风险来自未知的来源.

结论:

综合风险评估模型有效地识别了高风险的土壤重金属来源.
未知来源在土壤重金属污染和风险中起着重要作用,需要进一步调查.
有效的土壤重金属控制策略必须解决已确定的来源,特别是未知的来源.

关键词:

综合风险评估模型的风险评估模型.生态风险生态风险危害健康的风险土壤重金属重金属来源风险评估风险评估的来源

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