Islam Md Samrat Mohay Menul, Bhattacharjee Sreebash Chandra, Fahim Kaiser Mahmood, Islam Md Ashraful, Sarkar M A A Shofi Uddin, Alam Mahbub, Karim Md Rezaul, Chakraborty Dipankar
Bangladesh Council of Scientific and Industrial Research (BCSIR) Chittagong Laboratories, Chittagong 4220, Bangladesh; Institute of Technology Transfer & Innovation (ITTI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka 1205, Bangladesh.
Bangladesh Council of Scientific and Industrial Research (BCSIR) Chittagong Laboratories, Chittagong 4220, Bangladesh.
Mar Pollut Bull. 2025 Feb;211:117405. doi: 10.1016/j.marpolbul.2024.117405. Epub 2024 Dec 10.
This study investigated nine trace metals (Cr, Co, Cu, Cd, Ni, Mn, Fe, Zn, and Pb) concentrations of coastal sediments adjacent to a heavily industrialized area of Bangladesh using AAS. The most prevalent metals were zinc, with lesser amounts of Cd and Co. Pb, and Cd levels were higher than world standards, with a considerable enrichment of Pb at station 9. Ecological risk assessments showed moderate to high contamination, particularly by Pb and Cd. The Nemerow integrated pollution index demonstrated that overall pollution was low, but the levels about Cd were still concerning. All stations had hazard indices below 1 but chronic exposure to Ni, presents grounds for concern. Industry, urbanization, traffic, and agricultural runoff along with lithogenic sources have been identified to be the main sources of pollution using receptor modeling. The outcomes underscore the urgency that management measures must be taken to safeguard ecosystem and public health.
本研究采用原子吸收光谱法（AAS）调查了孟加拉国一个高度工业化地区附近沿海沉积物中9种痕量金属（铬、钴、铜、镉、镍、锰、铁、锌和铅）的浓度。最常见的金属是锌，镉和钴的含量较少。铅和镉的含量高于世界标准，9号站点的铅有相当程度的富集。生态风险评估显示存在中度至高度污染，尤其是铅和镉造成的污染。内梅罗综合污染指数表明总体污染程度较低，但镉的含量仍令人担忧。所有站点的危害指数均低于1，但长期接触镍令人担忧。利用受体模型确定，工业、城市化、交通、农业径流以及岩石成因是主要污染来源。研究结果强调了必须采取管理措施以保护生态系统和公众健康的紧迫性。
