Comparative study on physico-chemical and Heavy metal profile of Purle and Kunchenahalli Tanks of Shivamogga District, Karnataka
R. Ravikumar1, S. Thirumala2 and B.R. Kiran3
1Department of Geology, Sahyadri Science College, Shivamogga-577201 (India) 2Department of Environmental Science, Government First Grade College & P.G. Center, Near Anubav Mantapa Davanagere-577004, Karnataka (India) 3Environmental Science, DDE, Kuvempu University, Shankaraghatta-577 451, Karnataka (India)
ABSTRACT
The present investigation is aimed to know the concentration of physic-chemical and trace metals (Iron, Zinc, Copper, Nickel, Chromium, Lead and Cadmium) in the sediment and water samples of Purle tank and Kunchenahalli tank of Shivamogga district, Karnataka during the year 2017-18. The study revealed that the Purle tank is contaminated by few trace metals. The order of sequence of the levels of trace metals in the tank water for 5 sites was Pb > Zn > Cu > Cr > Cd > Fe, for sediment samples was Fe > Pb > Cr > Zn > Cd > Cu. The geoaccumulation index for trace metals show that the Purle tank is extremely polluted. Kunchenahalli tank is contaminated with high concentration of Iron and zinc, threatening to use for the domestic and irrigation purposes and also for survival of aquatic organisms. The present analysis reveals that sediment and water of the lentic water bodies needs some degree of treatment in order to protect them from future contamination.