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In the present paper an attempt has been made to study water quality parameters and pollution status of Tapi River (Gujarat). This is river situated 72º 38' to 78º 17' E longitudes and 20º 5' to 22º 3' N latitudes. For this study the water samples were collected from pre-selected sampling stations during January to June 2011 and important physico-chemical parameters such as temperature, turbidity, conductivity, pH, total alkalinity, DO, BOD, COD, chloride, total hardness, phosphate, Nitrate-N, Nitrite-N, ammonia, sodium and potassium were analyzed. Present study revealed that temperature (20-28oC), conductivity (0.08-2.71 μmhos /cum), total alkalinity (72-170 mgl-1), chloride (29.90-194.94 mgl-1) total hardness (20-192 mgl-1), Nitrate-N (0.05-0.90 mgl- 1), Nitrite-N (0.02-0.82 mgl-1) and sodium (50-178 mgl-1) were within the permissible limits of WHO and BIS while pH (7.9-8.6), Turbidity (20.0-33.3 NTU), dissolved oxygen (4.40-8.50 mgl-1),biological oxygen demand (0.40-8.40 mgl-1), chemical oxygen demand (24-152 mgl-1), phosphate (0.10-0.73 mgl-1), ammonia (0.03-1.04 mgl-1) and potassium (50.5-178.0 mg1-1) were observed beyond the permissible limits. On the basis of this study it was concluded that water of Tapi River is moderately polluted due to discharges of industrial waste, domestic sewage and agricultural run-off in river water, which require more efficient management to conserve this river.
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Author(s): Monika Dubey and NC Ujjania
Tapi River, water quality, permissible limit, pollution status, physiology, cell and molecular biology, genetics, biochemistry, biotechnology, bioinformatics, microbiology, immunology, parasitology