Heavy metals in freshly deposited sediments of the Gomati River (a tributary of the Ganga River): effects of human activities

摘要: The concentrations of various metals (Cr, Cu, Co, Fe, Mn, Ni, Pb, Zn, and Cd) were determined in recently deposited surface sediments the Gomati River Lucknow urban area. Markedly elevated (milligrams per kilogram) some metals, Cd (0.26–3.62), Cu (33–147), Ni (45–86), Pb (25–77), Zn (90–389) observed. Profiles these across stretch show a progressive downstream increase due to additions from 4 major drainage networks discharging effluents into river. degree metal contamination is compared with local background global standards. geoaccumulation index order for river Cd>Zn>Cu>Cr>Pb. Significant correlations observed between Cr total sediment carbon Zn. This study reveals that urbanization process associated higher heavy such as Cd, Cr, sediments. To keep clean future, it strongly recommended should not be overlooked before their discharge