Hossain et al. (2023) conducted a comprehensive investigation into the concentration, distribution, and human health risks of heavy metals in freshwater fish collected from the highly polluted Turag\u2013Tongi\u2013Balu river channel in Bangladesh. This river system, located in the industrial belt near Dhaka, is severely impacted by untreated industrial effluents, municipal waste, and urban runoff, making it a critical hotspot for aquatic contamination.<\/p>\n
The study quantified key toxic elements\u2014including lead (Pb), cadmium (Cd), chromium (Cr), nickel (Ni), copper (Cu), and zinc (Zn)\u2014in commonly consumed fish species using standard analytical techniques such as atomic absorption spectroscopy. The results revealed that several heavy metals, particularly Pb and Cd, exceeded international safety thresholds (e.g., WHO\/FAO limits), indicating substantial contamination of edible fish tissues.<\/p>\n
To evaluate human health implications, the authors applied risk assessment models, including Estimated Daily Intake (EDI)<\/strong>, Target Hazard Quotient (THQ)<\/strong>, and Hazard Index (HI)<\/strong>. The findings demonstrated that:<\/p>\n The study highlights that continuous consumption of contaminated fish from this river system may lead to serious health consequences<\/strong>, including neurological, renal, and carcinogenic effects associated with chronic heavy metal exposure.<\/p>\n Overall, this research underscores the urgent need for:<\/p>\n The authors conclude that without effective intervention, the Turag\u2013Tongi\u2013Balu river system will remain a significant source of toxic exposure, posing an immediate and long-term threat to public health.<\/p>\n Citation:<\/strong> Hossain, M.M., Jahan, I., Nahian, A. A., Zhu, D (2023) Immediate health risk: concentration of heavy metals in contaminated freshwater fishes from the river channel of Turag-Tongi-Balu. Environmental Toxicology. 2023;39(1):120\u2010134. https:\/\/doi.org\/10.1002\/tox.23959<\/a>.<\/em><\/span><\/p>\n","protected":false},"excerpt":{"rendered":" Hossain et al. (2023) conducted a comprehensive investigation into the concentration, distribution, and human health risks of heavy metals in freshwater fish collected from the highly polluted Turag\u2013Tongi\u2013Balu river channel in Bangladesh. This river system, located in the industrial belt … Continue reading \n
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