Ecology, Environment and Conservation Paper

STUDIES ON THE PHYSICO-CHEMICAL CHARACTERISTICS OF WATER SAMPLES OF POIROUPAT LAKE, IMPHAL EAST DISTRICT, MANIPUR, INDIA

KH. Usha, B. Manihar Sharma and K. Khelchandra Singh

Abstract

The present study attempts to analyse some of the important physico-chemical parameters of the water samples of the Poiroupat lake, Imphal east district, Manipur, located at a distance of 15 km from the Imphal town. Various physico-chemical parameters were analysed during 2006 at monthly intervals by following standard methods. Among the various parameters recorded the overall surface water temperature ranged from 11.0 to 30.1deg. C; Turbidity index (Secchi-disc transparency) from 32.5 to 142.3 cm; Total solute content from 35 mgL-1 (December) to 240 mgL-1 (July); pH from 5.0 to 7.4; Electrical Conductivity varied from 40.0 mS cm1 to 400.0 m S cm1 ; Dissolved Oxygen from 1.0 to 10.0 mgL-1; Free Carbon Dioxide ranged from 3.0 to 39.0 mgL-1; while Chloride values ranged from 12.8 to 75.2 mgL-1; Total Alkalinity varied from 11.0 to 147.0 mgL-1; Total Hardness ranged from 30.0 to 974.0 mgL-1.