Heavy Metal Pollution and Bioaccumulation in Mansagar lake

Abstract

The present research work was carried out for assessing the physicochemical parameters and heavy metal pollutioninMansagar lake water. Waterand fish samples were collected continuously over 12 months from January to December 2022 in triplets from designated locations inside the lake. The sampling and testing process was kept strictly according to the procedures of IS and APHA standards.The physico-chemical parameters observed were then compared to the allowable limits in accordance with the standards of the National Plan for Conservation of Aquatic Ecosystem (NPCA), which is run by the Indian government's Ministry of Environment, Forests, and Climate Change. It was discovered that while certain parameters were within the range, others were over the allowable limits. The heavy metal concentration was also found higher in some sites, The bioaccumulation of heavy metals was also recorded in some fish species. It certainly indicates that the lake is getting polluted day by day and the possible reasons may be continuous growth of population resulting into rapid industrialization and disposal of waste in the water body.