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<p>To investigate the potential toxic elements contamination in soil around an abandoned uranium smelter in southern China, nine soil samples were collected. The distribution characteristics of Cr, Ni, Cu, Zn, As, Pb, Th, and U within soil profiles were analyzed using physicochemical analysis and multi-trophic level ecotoxicity assessment. Pollution levels and ecological risks were evaluated using Geo-accumulation Index, Potential Ecological Risk Index, and Contamination Factor. Results showed the average mass fractions of Zn, Pb, Th, and U exceeded China’s soil background values with the study area facing slight to moderate pollution and mild to moderate ecological risk.</p>

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Ecological risk assessment of potential toxic elements in soil around an abandoned uranium smelter in southern China

  • 期刊论文

  • 发表日期：

    2025年12月12日

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  • Liang Chen,
  • Qian Qi,
  • Qun He,
  • Guozhong Zhang,
  • Shan Liu,
  • Wei Huang,
  • Kaituo Shi,
  • Leiyu Zhang,
  • Haiyang He

摘要

To investigate the potential toxic elements contamination in soil around an abandoned uranium smelter in southern China, nine soil samples were collected. The distribution characteristics of Cr, Ni, Cu, Zn, As, Pb, Th, and U within soil profiles were analyzed using physicochemical analysis and multi-trophic level ecotoxicity assessment. Pollution levels and ecological risks were evaluated using Geo-accumulation Index, Potential Ecological Risk Index, and Contamination Factor. Results showed the average mass fractions of Zn, Pb, Th, and U exceeded China’s soil background values with the study area facing slight to moderate pollution and mild to moderate ecological risk.