Shaheen Nazma, Sultana Marjia, Hasan Towhid, Khan Ishrat Nourin, Irfan Nafis Md, Ahmed Md Kawser
Institute of Nutrition and Food Science, University of Dhaka, Dhaka, 1000, Bangladesh.
Department of Food Technology and Nutrition Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
Biol Trace Elem Res. 2025 Jan;203(1):384-399. doi: 10.1007/s12011-024-04140-5. Epub 2024 Mar 8.
Heavy metal contamination of fish is a serious public health concern worldwide, including in Bangladesh. In this study, six commonly consumed fish species namely Hilsha (Tenualosa ilisha), Kachki (Corica soborna), Punti (Puntitus ticto), Taki (Channa punctatus), Meni (Nandus nandus), and Tengra (Mystus tengara) were analyzed for arsenic (As), cadmium (Cd), lead (Pb), zinc (Zn), copper (Cu), chromium (Cr), manganese (Mn), and nickel (Ni), by inductively coupled plasma mass spectrometry. The fish samples were collected from wholesale markets in Dhaka city, the main business hub of Bangladesh where the fishes converged from countrywide and are redistributed to the whole city. The metal concentration varied among the studied fish species. Hilsha, the national fish of Bangladesh, contained the highest As among the other fishes of this study, whereas Zn, Cd, Cu, Mn, and Ni were the highest in Kachki, and Pb and Cr were the highest in Tengra. The probable source of metal accumulation in the fish species may be the river or marine water that can be contaminated by industrial waste, pesticide, and/or fertilizer use in agriculture and/or commercial fish feeds. All analyzed fish species showed serious heavy metal pollution, having high average pollution load index (APLI) values (> 1). The estimated daily intake (EDI) values for the metals were lower than the maximum tolerable daily intake (MTDI). The hazard index (HI) for all the fish species was above 1 for adults, showing non-carcinogenic health risks. The target carcinogenic risk (TCR) values were below the acceptable limit (10) for most of the metals, indicating safe for consumption with respect to the risk of cancer.
鱼类的重金属污染是全球范围内一个严重的公共卫生问题，在孟加拉国也不例外。在本研究中，通过电感耦合等离子体质谱法对六种常见食用鱼类，即印度鲥（Tenualosa ilisha）、卡奇鱼（Corica soborna）、 punti鱼（Puntitus ticto）、塔基鱼（Channa punctatus）、梅尼鱼（Nandus nandus）和滕格拉鱼（Mystus tengara）进行了砷（As）、镉（Cd）、铅（Pb）、锌（Zn）、铜（Cu）、铬（Cr）、锰（Mn）和镍（Ni）的分析。鱼样本采自孟加拉国主要商业中心达卡市的批发市场，这些鱼从全国各地汇集于此并重新分销至全市。所研究的鱼类品种中金属浓度各不相同。孟加拉国的国鱼印度鲥在本研究的其他鱼类中砷含量最高，而卡奇鱼的锌、镉、铜、锰和镍含量最高，滕格拉鱼的铅和铬含量最高。鱼类中金属积累的可能来源可能是河流或海水，它们可能受到工业废物、农业中使用的农药和/或肥料以及/或商业鱼饲料的污染。所有分析的鱼类品种都显示出严重的重金属污染，平均污染负荷指数（APLI）值较高（>1）。金属的估计每日摄入量（EDI）值低于最大可耐受每日摄入量（MTDI）。所有鱼类品种对成年人的危害指数（HI）均高于1，表明存在非致癌健康风险。大多数金属的目标致癌风险（TCR）值低于可接受限值（10），表明就癌症风险而言食用是安全的。
