Rani Seema, Ahmed Md Kawser, Keliang Chen, Hossain Kazi Belayet, Yusuf Abu Hena Md, Chowdhury K M Azam, Habibullah-Al-Mamun Md, Khan Makidul Islam, Mahiddin Nor Aida, Ismail Zulhilmi, Islam Md Saiful
Coastal and Ocean Management Institute (COMI), Xiamen University, Fujian Province, China; Third Institute of Oceanography (TIO), Ministry of Natural Resources, Xiamen, Fujian Province, China; International Centre for Ocean Governance (ICOG), Faculty of Earth & Environmental Sciences, University of Dhaka, Dhaka -1000, Bangladesh.
International Centre for Ocean Governance (ICOG), Faculty of Earth & Environmental Sciences, University of Dhaka, Dhaka -1000, Bangladesh.
Mar Pollut Bull. 2025 Apr;213:117675. doi: 10.1016/j.marpolbul.2025.117675. Epub 2025 Feb 14.
Coastal areas serve as vital ecosystems that provide habitats for various organisms but are increasingly threatened by trace element pollution. This study examines trace element concentrations in water, fish, and shellfish from estuarine and coastal areas of Bangladesh's East Coast, evaluating their associated human health risks. The mean concentrations of all trace elements in surface waters of the East Coast were in the following descending order: Zn > Cu > As > Pb > Cr > Cd and all of the values were much higher than the guideline values. The mean concentrations for As, Pb, Cd, Cr, Ni, Cu and Zn for fish and shellfish were 0.42, 2.18, 0.6, 2.16, 0.68, 5.19 and 84.6 μg/g, respectively. Total value of estimated daily intake (EDI) for As, Pb, Cd, Cr, Cu and Zn were 3.108, 2.294, 0.874, 0.750, 5.856 and 31.36 mg/day, respectively. Most EDIs, except for As and Cu, were below tolerable limits. Total value of target hazard quotient (THQ) for As, Pb, Cd, Cr, Cu and Zn were 172.67, 10.924, 4.856, 0.0083, 2.4401 and 1.7421, respectively that suggested a higher level of potential non-carcinogenic health risk since THQ value is >1 except Cr. The target cancer risk (TR) value of As, Pb, Cd and Cr are ranged from 1.12E-04 to 1.39E-02, 1.87E-06 to 1.13E-04, 6.83E-05 to 1.13E-03 and 6.49E-05 to 1.05E-03, respectively. The TR values of As, Cr, and Cd in most studied fish exceeded the reference value (10), indicating a potential lifetime cancer risk for consumers. Immediate environmental interventions are essential to mitigate pollution and achieve sustainable development goals.
沿海地区是重要的生态系统，为各种生物提供栖息地，但正日益受到微量元素污染的威胁。本研究调查了孟加拉国东海岸河口和沿海地区水、鱼类和贝类中的微量元素浓度，评估了其对人类健康的相关风险。东海岸地表水所有微量元素的平均浓度按以下降序排列：锌＞铜＞砷＞铅＞铬＞镉，所有值均远高于指导值。鱼类和贝类中砷、铅、镉、铬、镍、铜和锌的平均浓度分别为0.42、2.18、0.6、2.16、0.68、5.19和84.6微克/克。砷、铅、镉、铬、铜和锌的估计每日摄入量（EDI）总值分别为3.108、2.294、0.874、0.750、5.856和31.36毫克/天。除砷和铜外，大多数EDI低于可耐受限值。砷、铅、镉、铬、铜和锌的目标危害商（THQ）总值分别为172.67、10.924、4.856、0.0083、2.4401和1.7421，这表明潜在的非致癌健康风险水平较高，因为除铬外THQ值＞1。砷、铅、镉和铬的目标癌症风险（TR）值分别在1.12E - 04至1.39E - 02、1.87E - 06至1.13E - 04、6.83E - 05至1.13E - 03和6.4A - 05至1.05E - 03之间。在大多数研究的鱼类中，砷、铬和镉的TR值超过参考值（10），表明消费者存在潜在的终生癌症风险。立即采取环境干预措施对于减轻污染和实现可持续发展目标至关重要。
