PRELIMINARY PHYSICO-CHEMICAL STUDY ON THE POLLUTION POTENTIAL OF RIVER LONGAI AT KARIMGANJ, ASSAM( INDIA)

Abstract

In this study water quality of river Longai  in stretch of 5 km at Karimganj was investigated for pollution potential by determining various water quality parameter. A total number of fifteen water samples  were collected during the summer season. A uniform distance between the collection sites was maintained during the collection of  the samples. Analysis was done for the quantitative determination of the concentration of Fe, Mn, Cu, Cr, Cd and As and also for the qualitative determination of physical parameters like pH, EC,TSS,TDS,TS and total hardness of the collected water samples. The concentrations of Mn, Cr, Fe, Cd and As obtained were higher than the permissible limit declared by WHO. pH and electrical conductance of the water samples lies between 6.56 to 7.47  and 6.65 to 10.2 mscm^-1 respectively. TSS, TDS,TS and total hardness were found to be within the permissible limit declared by WHO.