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在水库邻近的土壤中识别重金属来源和基于综合环境因素的特定来源风险评估:优先考虑控制来源的观点

Yongxing Pan¹, Xueling Li², Meng Chen³

¹College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China.

Journal of contaminant hydrology

|July 12, 2025

概括

这项研究使用地质探测器和正矩阵因子化模型确定了津县土壤中的重金属来源. 农业和采矿活动带来了最高的风险,特别是对儿童来说.

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:

储水池附近的土壤中重金属 (HM) 污染存在生态和健康风险.
中国津县土壤HM度经常超过区域背景水平.

研究的目的:

为了确定HM来源,并评估与之相关的生态和健康风险在Zhijin县.
整合地质探测器 (GD) 和正矩阵因子化 (PMF) 模型,以提高源分配的准确性.

主要方法:

在181个土壤样本中分析了8种HM (As,Cd,Cr,Cu,Hg,Ni,Pb,Zn).
地质探测器 (GD) 的应用用于分析空间变化驱动因素 (例如,河流的接近,土壤有机物质).
利用正矩阵因数分解 (PMF) 来识别和量化HM来源及其贡献.

主要成果:

确定了五个主要的HM来源:采矿-农业混合物,大气沉积,土壤母体材料,农业活动和运输-采矿混合物.
靠近河流对 (Cd) 的分布有很大影响,而土壤有机物则影响了 (Pb).
农业活动与儿童通过摄入的最高非致癌风险有关.

结论:

集成的GD-PMF框架为HM源识别提供了更准确的方法.
优先考虑对 (Cd) 和 (Hg) 的控制措施至关重要,因为它们具有很高的生态和健康风险.
对 (Pb) 和 (As) 等HM的差异化管理策略得到源和空间模式分析的支持.

关键词:

环境因素环境因素这是一种重金属,重金属.风险评估风险评估风险评估土壤土壤土壤.源标识来源的标识.

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