与湖泊地下水排放相关的潜在有毒元素的命运和风险:量化,建模和生物地质化学
Shen Qu1, Juliang Wang1, Keyi Zhang1
1Inner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
Environment international
|July 30, 2025
概括
湖区地下水排放大大丰富了湖泊中的潜在有毒元素 (PTE),造成更高的健康风险,特别是对儿童. 蒸发物溶解是这些PTE的主要来源.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 地质化学 地质化学
背景情况:
- 湖泊中的潜在有毒元素 (PTE) 被研究,但它们通过湖泊地下水排放 (LGD) 的丰富和健康风险不明.
- 了解LGD驱动的PTE动态对于湖泊和地下水管理至关重要.
研究的目的:
- 在乌兰苏海湖盆地调查与LGD相关的PTE的来源,地化学过程和健康风险.
- 阐明LGD在PTE丰富和湖泊生态系统循环中的作用.
主要方法:
- 自组织地图 (SOM) 和正矩阵因数分解 (PMF) 用于PTE源的识别.
- 多同位素标记物 (δD/δ18O水, 87Sr/86Sr, δ34S/δ18O硫酸盐, 222Rn) 用于追踪地质化学过程.
- 对地下水和地表水暴露的健康风险评估.
主要成果:
- 地下水的PTE度明显高于地表水,,,,和的含量显著增加.
- 蒸发溶解 (46.2%) 是主要的PTE来源,其次是工业 (23.1%) 和氧化还原过程 (23.9%).
- LGD流量对湖水质量产生了重大影响,地下水带来了更高的非致癌和致癌健康风险,特别是在儿童身上.
结论:
- 在湖泊系统中,LGD是PTE丰富的重要途径,主要由蒸发物溶解驱动.
- 地下水中的PTE带来了高度的健康危害,需要有针对性的管理策略.
- 这项研究为有效的水资源管理提供了对LGD驱动的PTE循环的关键见解.
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