Abstract
In the present work water samples are collected from six different Ghats of Ganga river in Kanpur city from March 2010 to February 2011 on monthly basis and water quality assessment is carried out. Pearson’s correlation coefficient (r) value is determined using correlation matrix to identify the highly correlated and interrelated water quality parameters. To test the significance of the pair of parameters p-value is carried out and in order to test the joint effects of several independent variables, without frequent or repeated monitoring of water quality in a location. Higher concentration of Chromium (6.7 mg/l) at Siddhnath ghat in June, and its monthly variation showed highly adverse effect on river Ganga due to tanneries effluent. It is found that significant positive correlation holds for Temp vs BOD GH1 (r= 0.99, p<0.01), EC vs chloride GH6 (r=0.877, p<0.01), EC vs TDS GH6 (r=0.836, p<0.01); and TA vs DO GH1(r=0.842, p<0.01), pH vs Mg GH6 (r=-0.79, p<0.01), EC vs Nitrate GH6 (r=0.846, p<0.01). A significant negative correlation was found for DO vs BOD GH3 (r=-0.943, p<0.01), DO vs TDS GH6 (r=-0.838, p<0.01), and TA vs TDS GH6 (r=-0.88, p<0.01). Chromium is found that non significant correlation. The mean values of all the measured physico-chemical parameters of Ganga river water are within the highest desirable limit set by WHO except BOD.
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