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确定不同保护目标的有毒金属控制优先级,基于对黄金炼区周围的源面生态和人类健康风险评估

Yan Zhou¹, Da Ding¹, Yuanchao Zhao¹

¹Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing 210042, China.

Journal of hazardous materials

|February 22, 2024

概括

黄金炼厂附近的土壤被有毒金属污染是一个重大风险. 这项研究确定了采矿和炼作为主要来源,对人类,特别是儿童造成不可接受的致癌和非致癌健康风险.

科学领域:

环境科学环境科学
毒理学毒理学毒理学
风险评估风险评估

背景情况:

黄金炼区由于有毒金属 (TM) 污染土壤,存在风险.
有效的生态健康保护需要确定优先污染源和污染物.

研究的目的:

调查TM污染特征,来源分配以及黄金炼厂附近农业土壤中的生态和人类健康风险.
结合受体模型进行全面的生态人类风险评估.

主要方法:

使用正矩阵因子化 (PMF),生态风险评估 (ERA) 和概率风险评估 (PRA).
分析了土壤污染水平的内梅罗污染指数 (NPI).
对不同来源和目标污染物的相应风险.

主要成果:

超过95%的样本显示中度到高的TM污染 (平均NPI=4.27).
确定的主要来源:采矿 (44.16%),大气沉积 (24.41%),黄金炼 (17.52%) 和农业 (13.91%).
大气沉积是主要的生态风险贡献者 (30.8%),主要是由于 (Hg).
在所有人群中都发现了不可接受的致癌和非致癌风险,儿童的风险更高.
黄金炼活动 (As) 和采矿来源 (Cr) 分别是致癌和非致癌风险的关键因素.

结论:

优先污染源和目标污染物在生态与人类健康保护方面有所不同.
这些发现为有针对性的土壤风险管理和成本有效的补救策略提供了新的视角.

关键词:

生态健康生态健康黄金炼业的黄金炼工作优先控制控制优先控制.以来源为导向的来源导向.有毒金属有毒金属

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