Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China; Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China.
J Hazard Mater. 2023 Feb 5;443(Pt B):130222. doi: 10.1016/j.jhazmat.2022.130222. Epub 2022 Oct 21.
Identifying potential sources of soil potentially toxic elements (PTEs) and developing source-oriented health risk assessments in typical mining cities are key for pollution prevention and risk management. To this end, a case study was conducted to explore the pollution characteristics, potential sources, and human health risks of PTEs in Daye City, China. Indices, including the pollution factor (PF), pollution load index (PLI), and geo-accumulation index (I), were applied to assess PTE pollution. Cd had the highest value among the detected PTEs, and 82.93% of the sampling sites had moderate pollution levels, with the highest mean I value for Cd (2.30). Four potential sources were determined. Cr and Ni originated mainly from natural sources. Zn (91.5%) was exclusively and then Cd (33.1%) was moderately derived from industrial activities. The mixed source of various mineral exploitation smelting, and coal-fired traffic emissions leaded to the accumulation of As, Cd, and Pb. Cu was associated with Cu-related mining and smelting activities. The probabilistic health risk assessment indicated that the non-carcinogenic risks for populations were negligible. Overall, this work provides scientific information for environmental managers to manage soil PTE pollution through the effective management of anthropogenic sources with limited resources and costs.
识别土壤潜在有毒元素（PTEs）的潜在来源，并在典型矿业城市开展面向源的健康风险评估，是污染预防和风险管理的关键。为此，进行了一项案例研究，以探讨中国大冶市 PTEs 的污染特征、潜在来源和人体健康风险。采用污染因子（PF）、污染负荷指数（PLI）和地积累指数（I）等指数评估 PTE 污染。在所检测的 PTE 中，Cd 的含量最高，82.93%的采样点处于中度污染水平，Cd 的 I 值最高（2.30）。确定了四个潜在来源。Cr 和 Ni 主要来源于自然源。Zn（91.5%）完全来源于工业活动，Cd（33.1%）则为中度来源于工业活动。各种矿产开采、冶炼和燃煤交通排放的混合源导致了 As、Cd 和 Pb 的积累。Cu 与 Cu 相关的采矿和冶炼活动有关。概率健康风险评估表明，人群的非致癌风险可以忽略不计。总的来说，这项工作为环境管理者提供了科学信息，通过对人为源进行有效管理，可以用有限的资源和成本来管理土壤 PTE 污染。
