Author(s): Shivendra Kumar Singh

Abstract: During the present study, the physico-chemical characteristics of the water of the Ganga and river Sone, Koshi and Ganga (Near Buxar, Patna, Mokama and Barh) were analysed. The physico-chemical parameter as Temperature, pH, Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total alkalinity (TA), Total Hardness (TH), Total Dissolve Solids (T.D.S), Turbidity & Chloride were used to analyse from these sites. It was reported that Inorganic constituents (viz. K⁺, Na⁺, Ca^{+ +}, C^l-, S0^4-- and PO^{4- -}) of the water sample from different sites did not show any significant variations. However the values of DO of the water samples collected from different sites show variations. It was observed that dissolved oxygen level were highest in the water samples collected from river Ganga near Barh (12.0 mg/It) and river Koshi near Saharsa.

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