A Critical Review of Heavy Metal Pollution and Its Effects in Bangladesh

Heavy metal, one of the most hazardous pollutant that can pose serious threat to human and environment. The concentrations of metals are increasing at an alarming rate due to boost of unplanned industrialization and urbanization. Though some metals are playing crucial role as micronutrients but the excessive amount exert negative impact at great extent. The existence of toxic heavy metals in the air, water and sediment can cause severe problems to all organisms because of their long persistence nature and bioaccumulation in the food chain. The present study reviews the various area of Bangladesh to make information on the sources of metal pollution, dissemination of metals in the environment and their possible effects on atmosphere, water, sediment, fishes and vegetables (plants).