Heavy metals such as arsenic, lead, cadmium, and chromium are non-biodegradable hazardous substances derived from natural mineral sources or industrial discharges (Qin et al. Furthermore, we recommended a conceptual policy framework to combat heavy metal contaminations in Bangladesh. In particular, this study for the first time explored the potential multi-trophic transfer of heavy metals via food webs in Bangladesh. This systematic review critically discussed heavy metal contamination, exposure toxicity, research gaps, existing legislation, and sustainable remediation strategies to enhance Bangladesh’s food safety. Although widespread heavy metal contamination in various foodstuffs and environmental matrices have been summarized in some reports, a critical evaluation regarding multi-trophic transfer and the health risk of heavy metal exposure through food chain toxicity in Bangladesh has not been performed. However, an extensive assessment of the toxicity of heavy metals in food webs is lacking. Literature survey revealed that the sources and transport pathways of heavy metals in the ecosystem and the abundance of heavy metals in the food products of Bangladesh are potential threats to food safety. Several lines of evidence suggest that the level of heavy metals in foodstuffs of Bangladesh is higher than the acceptable limits set by World Health Organization/Food and Agriculture Organization. Heavy metals at hazardous levels are commonly found in foodstuffs of Bangladesh, mainly due to the lack of safety guidelines and poor management of industrial effluents. Heavy metals occur naturally in very small amounts in living organisms, but exposure to their higher concentrations is hazardous.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |