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<p>This is the first report on the bioaccumulation of six potentially toxic elements (PTEs) in the muscles of 36 edible fish species collected from the River Mahanadi to assess their suitability for human consumption. Out of six metals, only Cr, Mn, Pb, and Zn were detected in some of the fish species. The average concentrations of metals (mg/kg wet weight) followed the order Zn (7.8) &gt; Pb (5.04) &gt; Mn (4.54) &gt; and Cr (2.15) &gt; Cu (below detection limit—BDL) and Cd (BDL). Only on some occasions, Pb and Cr concentrations exceeded the permissible limits proposed by Nauen (1983). Target hazard quotient (<i>THQ</i>), hazard index (<i>HI</i>), and cancer risk (<i>CR</i>) were evaluated for non-carcinogenic and carcinogenic risks. <i>THQ</i> and <i>HI</i> were &lt; 1, while <i>CR</i> values fell within the acceptable range, suggesting no potential health risk associated and instead signifying a beneficial supply of nutrients for the fish-eating human population. Although at the present accumulation level, the dietary intake of fish is not expected to pose any risks, consuming fish in high quantities for longer periods may increase the health risk specifically for Pb and Cd. This study offers fundamental data for evaluating food safety and recommends ongoing surveillance of additional PTEs in the future.</p>

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Bioaccumulation and human health risk assessment of potentially toxic elements in commercially important fish species from the peninsular River Mahanadi, India

  • 期刊论文

  • 发表日期：

    2025年4月20日

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  • Vikas Kumar,
  • Srikanta Samanta,
  • Subir Kumar Nag,
  • A. M. Sajina,
  • Basanta Kumar Das,
  • Keya Saha,
  • Sudarsan Bandyopadhya,
  • Samir Kumar Paul,
  • Sanjay Bhowmick

摘要

This is the first report on the bioaccumulation of six potentially toxic elements (PTEs) in the muscles of 36 edible fish species collected from the River Mahanadi to assess their suitability for human consumption. Out of six metals, only Cr, Mn, Pb, and Zn were detected in some of the fish species. The average concentrations of metals (mg/kg wet weight) followed the order Zn (7.8) > Pb (5.04) > Mn (4.54) > and Cr (2.15) > Cu (below detection limit—BDL) and Cd (BDL). Only on some occasions, Pb and Cr concentrations exceeded the permissible limits proposed by Nauen (1983). Target hazard quotient (THQ), hazard index (HI), and cancer risk (CR) were evaluated for non-carcinogenic and carcinogenic risks. THQ and HI were < 1, while CR values fell within the acceptable range, suggesting no potential health risk associated and instead signifying a beneficial supply of nutrients for the fish-eating human population. Although at the present accumulation level, the dietary intake of fish is not expected to pose any risks, consuming fish in high quantities for longer periods may increase the health risk specifically for Pb and Cd. This study offers fundamental data for evaluating food safety and recommends ongoing surveillance of additional PTEs in the future.