Pollution characteristics, risk assessment and source comparative analysis of potentially toxic elements in soils of three superlarge antimony ore areas in the Zijiang River, Hunan, China

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2025-06-18 DOI:10.1016/j.envpol.2025.126701

Xiaohui Wang , Renjian Deng , Chuang Wang , Ruofan Xu , Baolin Hou , Saijun Zhou , Xifeng Wang , Bozhi Ren , Andrew Hursthouse

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Abstract

The soils pollution of potentially toxic elements (PTEs) in the antimony (Sb)-ore area has seriously threatened residents' health and ecological safety. Although there have been many studies on soil PTEs pollution assessment in Sb mining, most of them focus on a single Sb-ore area, which makes it difficult to quantitatively assess the contribution of natural and anthropogenic sources. Herein, the pollution characteristics and risks of 11 PTEs in soil of three superlarge Sb ore areas in the Zijiang River were compared for the first time. Firstly, the concentration, distribution and correlation of PTEs were analyzed by surveying and sampling. Then, the geological accumulation index, enrichment factor and pollution load index were used to comprehensively evaluate the pollution degree of PTEs. Further, the ecological risk and risk flow were investigated through potential ecological risk index, initial risk index and network environment analysis. Additionally, human health risk assessment model was introduced to assess the non-carcinogenic and carcinogenic risks of PTEs to males, females and children under different exposure routes, with children facing the highest risk (hazard quotient of all PTEs up to 26.90). Finally, combined with Pearson and positive definite matrix factors, the sources of PTEs were analyzed, including geology, industry, transportation and agriculture, and the contributions of them were determined. This work can offer a new approach for large-scale environmental pollution assessment in mining areas, and also provide scientific basis for achieving environmental protection and sustainable resource development in mining areas.

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湖南紫江三个超大锑矿区土壤潜在有毒元素污染特征、风险评价及来源对比分析

锑矿区土壤中潜在有毒元素（pte）的污染严重威胁着居民的健康和生态安全。虽然对锑矿区土壤pte污染评价的研究较多，但大多集中在单一锑矿区，难以定量评价自然和人为来源的贡献。在此基础上，首次比较了紫江流域3个特大锑矿区土壤中11种pte的污染特征及风险。首先，通过调查和抽样分析了pte的浓度、分布和相关性。利用地质聚集指数、富集系数和污染负荷指数对pte污染程度进行综合评价。通过潜在生态风险指数、初始风险指数和网络环境分析，考察了生态风险和风险流。引入人体健康风险评估模型，评估不同暴露途径下pte对男性、女性和儿童的非致癌性和致癌性风险，其中儿童面临的风险最高（所有pte的危害商高达26.90）。最后，结合Pearson因子和正定矩阵因子，从地质、工业、交通和农业四个方面分析了pte的来源，确定了它们对pte的贡献。该工作可为矿区大规模环境污染评价提供新途径，为实现矿区环境保护和资源可持续开发提供科学依据。

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来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.