University Of Tehran Press Pollution 2383-451X 10 2 2024 05 01 Trace metal exposure and health concerns in Bangladeshi rivers: a seasonal comparison of the Buriganga, Shitalakhya, Meghna, Karnaphuli, and Padma rivers' water, sediment, and fish 677 699 96582 10.22059/poll.2024.368080.2137 EN Nahid Bin Hasan Institute of Leather Engineering and Technology, University of Dhaka, Dhaka-1209, Bangladesh 0000-0001-7194-2933 Md. Abu Fahad Institute of Leather Engineering and Technology, University of Dhaka, Dhaka-1209, Bangladesh Abdullah-Al Zahid Stockholm University, Sweden Mahadi Hasan Unversity of Babes- Bolyai, Romania 0009-0006-9525-6763 Ashiqur Rahaman Institute of Leather Engineering and Technology, University of Dhaka, Dhaka-1209, Bangladesh Sakhawat Hossain Institute of Leather Engineering and Technology, University of Dhaka, Dhaka-1209, Bangladesh Tama Rani Sarker Southern Illinois University Carbondale, 1230 Lincoln Drive, Carbondale-62901, IL, USA 0009-0008-6595-7571 Mohammad Nazmul Hossain Department of Architecture, Chittagong University of Engineering &Technology, Chittagong-4349, Bangladesh Nazma Khatun Atomic Energy Centre, Chattogram, Bangladesh Atomic Energy Commission, Chattogram 4209, Bangladesh 0000-0003-4557-2355 Journal Article 2023 11 13 We determined the levels of nine heavy elements in water, sediment, and the edible tissues of three frequently eaten fish species collected from the five polluted rivers in different divisions of Bangladesh. These samples were randomly taken from five rivers and analyzed by Flame Atomic Absorption Spectroscopy. We found seasonal fluctuations in the hierarchy of mean concentration for different heavy metals in five rivers’ fish, water, and sediments. In the water, the concentrations of Cd, Cr, Cu, Fe, Mn, Pb, Zn, Ni, and Hg ranged from 0.010-0.081, 0.016-5.531, 0.013-2.445, 0.860-22.924, 0.043-1.424, 0.015-0.933, 0.091-1.451, 0.012-2.888, and 0.010-0.032 mg/l where in the sediment the concentrations ranged from 0.1-1.47, 4.21-284.1, 0.12-28.46, 1860-14971.33, 122.1-480.8, 0.84-42.15, 2.14-210.35, 15.3-30.4, and 0.17-10.44 mg/kg. For fishes concentrations ranging from BDL-0.78, 0.04-86.45, 0.01-1.67, 4.19-102, 0.08-0.94, 0.01-0.99, 0.08-9.56, 0.01-4.56, and BDL-0.2 mg/kg were reported for the above metals order respectively. The highest concentration (mean) of Cr and Fe in waters and sediments was 1023 times and 13020.72 % higher than WHO’s standard and Toxicity Reference Values (TRV), respectively. Besides, the bioaccumulation factors (BAF) of the selected elements for the studied fishes were found to be between 0.036-626.25, where the pollution load index (PLI) for the five rivers ranged from 0-0.95 and the concentration factor (CF) found between 0.02-4.03. Estimated daily Intake (EDI) as well as Target hazard quotients (THQs) analyses revealed potential risks for fish consumers, particularly the level of some metals exceeding the WHO/FAO's tolerable limit, which indicates that the rivers' water and fish are dangerous to humankind. https://jpoll.ut.ac.ir/article_96582_24f2ca2d037b68704e972cd494e1a457.pdf