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生态风险和人类健康评估大通湖沉积物中的重金属

Gao Li¹, Rui Chen¹, Zhen Li¹

¹Changsha General Survey of Natural Resources Center, China Geological Survey, Ningxiang 410600, China.

|July 25, 2025

概括

达通湖沉积物显示轻微的重金属污染,其中 (Ni) 和铜 (Cu) 是最普遍的. 目前生态和人类健康风险较低,但建议持续监测 (As) 和 (Cd).

科学领域:

环境科学环境科学
地质化学地质化学
生态毒理学生态毒理学

背景情况:

湖泊沉积物中的重金属污染对全球生态和健康构成风险.
达通湖经历过重金属污染 (Cd, Mn) 由于过去的农业和渔业做法.
最近的湖泊管理举措带来了显著的生态改善.

研究的目的:

为了评估大通湖沉积物当前的重金属污染状况.
评估与沉积沉重金属相关的生态和人类健康风险.
确定重金属和潜在的来源,以进行有针对性的管理.

主要方法:

收集和分析了15个沉积物样本,以检测重金属 (Cd,As,Pb,Cr,Cu,Mn,Ni,Zn).
地质积累指数和丰富系数用于污染评估的应用.
利用蒙特卡洛模拟来进行强大的生态和人类健康风险评估.
计算单一和综合的生态风险指数.

主要成果:

Cd,Pb,Cr,Cu,Mn,Ni和Zn的平均度超过了东廷湖的背景值;As则较低.
沉积物污染水平通常很小,Ni > Cu > Cr > Mn > Cd > Pb > Zn > As.
单元生态风险是Cd和As的最高;综合风险在轻微水平 (32.83).
通过摄入和皮肤接触对人类健康的非致癌和致癌风险很低.

结论:

达通湖沉积物呈现轻微的重金属污染,主要是由Ni和Cu驱动的.
(As) 和 (Cd) 具有最高的生态和健康敏感性.
持续监测和鉴定As和Cd的来源对于长期的环境保护和公共健康至关重要.

关键词:

蒙特卡洛建模模型评估生态风险评估生态风险重金属重金属的使用.人类健康风险评估评估人类健康风险评估沉积物的沉积物

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