Chakma Suprakash, Rahman Md Arifur, Jaman Mst Niloy, Nag Sudipta Kumar, Ali Md Kaosher, Hoque Md Sazedul, Chakma Kanchan
Department of Fisheries Technology, Patuakhali Science and Technology University, Dumki, Patuakhali, 8602, Bangladesh.
Department of Fisheries Biology and Genetics, Patuakhali Science and Technology University, Dumki, Patuakhali, 8602, Bangladesh.
Biol Trace Elem Res. 2025 Apr;203(4):1859-1870. doi: 10.1007/s12011-024-04325-y. Epub 2024 Jul 30.
The presence of heavy metal contaminants in fish and shellfish in aquatic environments poses a risk to human health due to trophic transfer. This study determined the levels of various trace elements (Fe, As, Cr, Zn, Cu, Ni, Pb, and Cd) in the muscles, gills, and liver of hilsa (Tenualosa ilisha) and prawn (Macrobrachium rosenbergii) samples obtained from the Tetulia River, Bangladesh. The results showed that the level of trace elements in different body parts differed significantly (P < 0.05) between species, displayed below recommended threshold levels. The cumulative low to higher hierarchic concentration of the trace elements was as follows: Fe > Zn > Cu > Cr > Ni > Pb > As > Cd. Hilsa had significantly (P < 0.05) higher bioaccumulated trace elements compared to prawn. With the exception of Ni and Cd, the estimated daily intakes (EDI) for both adults and children were below the recommended daily allowance (RDA), which exhibits that other trace elements do not cause harm to human health. Furthermore, the hazard index (HI) and total hazard quotient (THQ) were also found to be within acceptable limits, taking into account the higher vulnerability of children to toxicity compared to adults. Notably, the HI suggested that children were approximately four times more susceptible to both carcinogenic and non-carcinogenic effects compared to adults. Ultimately, the levels of carcinogenic risk were deemed acceptable, despite the estimated values suggesting susceptibility to adverse effects in both adults and children. This study concluded that fish and shellfish may not pose a health risk to consumers, highlighting the importance of further monitoring of trace elements in the catchment area.
由于营养转移，水生环境中鱼类和贝类体内的重金属污染物会对人类健康构成风险。本研究测定了从孟加拉国特图利亚河采集的鲥鱼（Tenualosa ilisha）和对虾（Macrobrachium rosenbergii）样本的肌肉、鳃和肝脏中各种微量元素（铁、砷、铬、锌、铜、镍、铅和镉）的含量。结果表明，不同物种不同身体部位的微量元素含量差异显著（P < 0.05），均低于推荐阈值水平。微量元素从低到高的累积层次浓度如下：铁 > 锌 > 铜 > 铬 > 镍 > 铅 > 砷 > 镉。与对虾相比，鲥鱼体内生物累积的微量元素显著更高（P < 0.05）。除镍和镉外，成人和儿童的估计每日摄入量（EDI）均低于推荐每日摄入量（RDA），这表明其他微量元素不会对人类健康造成危害。此外，考虑到儿童比成人对毒性更易敏感，发现危害指数（HI）和总危害商数（THQ）也在可接受范围内。值得注意 的是，HI表明儿童对致癌和非致癌影响的易感性比成人高约四倍。最终，尽管估计值表明成人和儿童都易受不良影响，但致癌风险水平被认为是可接受的。本研究得出结论，鱼类和贝类可能不会对消费者构成健康风险，强调了对集水区微量元素进行进一步监测的重要性。
