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<p>Marine fish are a vital nutritional source in Bangladesh, but rising contamination threatens food safety and public health. This study assessed heavy metal levels and related health risks in six commercially important fish species from Cox’s Bazar: <i>Setipinna phasa</i>, <i>Harpadon nehereus</i>, <i>Otolithoides pama</i>, <i>Scomber australasicus</i>, <i>Decapterus macrosoma</i>, and <i>Tenualosa ilisha</i>. A total of 73 samples were collected from Shamlapur and BFDC landing centers. Muscle tissues were analyzed for Pb, Cd, Cr, Cu, Mn, and As using atomic absorption spectrophotometry. Health risk was evaluated through estimated daily intake (EDI), average pollution load index (APLI), target hazard quotient (THQ), hazard index (HI), and target cancer risk (TCR). Cu exhibited the highest concentrations, while Cd showed the lowest. Significant interspecies variation (<i>p</i> &lt; 0.05) occurred, though no site-specific differences were found. EDIs for all metals were within permissible limits, and most species were categorized as micro to lightly polluted. THQs remained below 1, suggesting negligible non-carcinogenic risk. However, <i>O. pama</i> showed an HI slightly above 1, indicating potential health concern with frequent consumption. Carcinogenic risk assessment showed Cd consistently exceeded acceptable limits, with additional contributions from As and Cr in some species. Overall, marine fish from Cox’s Bazar remain generally safe for short-term consumption, but chronic exposure to Cd, As, and Cr may increase cancer risks. The findings emphasized the urgency of balancing the nutritional benefits of fish consumption with strategies to mitigate toxic risks, thereby safeguarding food safety and public health in coastal Bangladesh.</p>

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Species-specific bioaccumulation of heavy metals in marine fish from Cox’s bazar and their human health implications

  • 期刊论文

  • 发表日期：

    2025年11月14日

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  • Mohammad Shakil Khan,
  • Saifuddin Rana,
  • Shahida Arfine Shimul,
  • Abdullah Al Mamun,
  • Zobair Alam Sunny,
  • Ifthekher Ahmed Shakib,
  • Nisho Akther,
  • Tarek Molla,
  • Md.Tanvir Hossain Tushar,
  • Inkiad Ahmed Himel,
  • Sk. Ahmad Al Nahid

摘要

Marine fish are a vital nutritional source in Bangladesh, but rising contamination threatens food safety and public health. This study assessed heavy metal levels and related health risks in six commercially important fish species from Cox’s Bazar: Setipinna phasa, Harpadon nehereus, Otolithoides pama, Scomber australasicus, Decapterus macrosoma, and Tenualosa ilisha. A total of 73 samples were collected from Shamlapur and BFDC landing centers. Muscle tissues were analyzed for Pb, Cd, Cr, Cu, Mn, and As using atomic absorption spectrophotometry. Health risk was evaluated through estimated daily intake (EDI), average pollution load index (APLI), target hazard quotient (THQ), hazard index (HI), and target cancer risk (TCR). Cu exhibited the highest concentrations, while Cd showed the lowest. Significant interspecies variation (p < 0.05) occurred, though no site-specific differences were found. EDIs for all metals were within permissible limits, and most species were categorized as micro to lightly polluted. THQs remained below 1, suggesting negligible non-carcinogenic risk. However, O. pama showed an HI slightly above 1, indicating potential health concern with frequent consumption. Carcinogenic risk assessment showed Cd consistently exceeded acceptable limits, with additional contributions from As and Cr in some species. Overall, marine fish from Cox’s Bazar remain generally safe for short-term consumption, but chronic exposure to Cd, As, and Cr may increase cancer risks. The findings emphasized the urgency of balancing the nutritional benefits of fish consumption with strategies to mitigate toxic risks, thereby safeguarding food safety and public health in coastal Bangladesh.