生态和健康风险评估,地化学背景预测和沉积物中潜在有毒元素的来源识别:流域规模研究 (数据更新)
Leila Sahli1, Mohamed El Hadef El Okki2, Radia Azzoug3
1Laboratory of Biology and Environment, Constantine 1 Mentouri Brothers University, 25000, Constantine, Algeria. sahli.leila@umc.edu.dz.
Environmental geochemistry and health
|August 5, 2025
概括
阿尔及利亚沉积物中的潜在有毒元素 (PTEs) 对健康构成风险,特别是对儿童. 人为来源导致,,铜和污染,迫切需要环境监测和干预.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 公共卫生 公共卫生
背景情况:
- 在阿尔及利亚Kebir Rhumel流域的表面沉积物中,分析了潜在的有毒元素 (PTEs).
- 了解PTE分布和来源对于评估生态和健康风险至关重要.
研究的目的:
- 评估Kebir Rhumel流域表面沉积物中PTE的度和污染水平.
- 确定PTE的自然和人为来源.
- 评估与PTE相关的生态和健康风险,特别是对于儿童.
主要方法:
- 在雨季和旱季期间,从37个地点收集了13个瓦迪的沉积物样本.
- 使用火焰原子吸收光谱法来确定PTE (Cd,Co,Cr,Cu,Fe,Mn,Ni,Pb,Zn) 的度.
- 用多变量数据分析,包括主要组件分析来追踪污染源.
主要成果:
- 沉积物中PTE度按照以下顺序进行:Fe > Mn > Zn > Pb > Cu ≈ Cr > Ni > Co > Cd.
- Cd,Cu,Fe,Mn,Pb和Zn的度超过了标准水平,而Co,Cr和Ni的度仍然低于临界值.
- 对Cd,Pb,Cu和Zn而言,已确定人为来源,而Cr,Co,Fe,Mn和Ni主要是地质起源的.
- 的度对儿童构成致癌和非致癌风险,食用是主要的暴露途径.
结论:
- 克比尔鲁梅尔流域的水域表现出严重的PTE污染,自然和人为因素都有所贡献.
- 特定的PTE,特别是,铜,和,需要有针对性的管理策略,因为它们的含量较高和人为起源.
- 鉴定到的健康风险,尤其是暴露在中的儿童的健康风险,强调了该地区迫切需要进行环境修复和监测.
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