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<p>Soil contamination by trace elements near thermal power plants poses serious ecological and health challenges, particularly in agricultural regions. This study evaluates the impact of Assiut Thermal Power Plant emissions on surrounding agricultural soils through a comprehensive multi-index assessment. Concentrations of As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn were analyzed, and contamination levels were quantified using contamination factor (CF), pollution load index (PLI), and geo-accumulation index (I_geo). Potential ecological risk (PERI) and human health risk assessments were also conducted to gauge environmental and public health implications. Results revealed severe contamination with Cd (CF = 7.04) and Co (CF = 17.15), resulting in an average PERI of 334.8, indicating a very high ecological risk. Hotspot analysis revealed the highest contamination at downwind sites (S1, S5, S10), indicating deposition from plant emissions. Human health assessment showed that Cd was the primary contributor to non-carcinogenic risk, especially for children (HQ = 1.24). These findings underscore the importance of regular monitoring, emission control strategies, and soil remediation to mitigate long-term ecological and health impacts.</p>

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Assessing heavy metal ecotoxicity in agricultural soils near a thermal power plant: insights from multiple risk indices

  • 期刊论文

  • 发表日期：

    2026年4月29日

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  • M. Bady,
  • H. Mannaa,
  • A. Orabi,
  • A. Dawood,
  • A. Khan,
  • M. A. Khlifi

摘要

Soil contamination by trace elements near thermal power plants poses serious ecological and health challenges, particularly in agricultural regions. This study evaluates the impact of Assiut Thermal Power Plant emissions on surrounding agricultural soils through a comprehensive multi-index assessment. Concentrations of As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn were analyzed, and contamination levels were quantified using contamination factor (CF), pollution load index (PLI), and geo-accumulation index (I_geo). Potential ecological risk (PERI) and human health risk assessments were also conducted to gauge environmental and public health implications. Results revealed severe contamination with Cd (CF = 7.04) and Co (CF = 17.15), resulting in an average PERI of 334.8, indicating a very high ecological risk. Hotspot analysis revealed the highest contamination at downwind sites (S1, S5, S10), indicating deposition from plant emissions. Human health assessment showed that Cd was the primary contributor to non-carcinogenic risk, especially for children (HQ = 1.24). These findings underscore the importance of regular monitoring, emission control strategies, and soil remediation to mitigate long-term ecological and health impacts.