摘要：Analysis of water quality of five tank water samples in Tiptur taluk through 18 physico-chemical parameters,namely WT, pH, DO, BOD, EC, TDS, TA, TH, CO 3 2- , HCO 3 - , Cl - , SO 4 2- , PO 4 3- , NO 3 - , Na + , K + , Ca 2+ and Mg 2+was taken up during December 2010 to November 2012. A systematic calculation of correlation coefficientamong these 18 physico-chemical parameters was carried out using Microsoft excel spreadsheet. Acorrelation coefficient of 1.00 was found between the TA-HCO 3 - pair in Eachanur and V. Mallenahallisamples and the pair is perfectly correlated, whereas, ‘r’ value was 0.99 in Halkurke and Honnavallisamples and 0.97 in Albur samples. EC and TDS were perfectly correlated in Halkurke samples and forthe same pair ‘r’ value was 0.99 in Eachanur, V. Mallenahalli and Honnavalli samples, whereas it was 0.85in Albur samples. BOD and PO 4 3- were perfectly correlated in Eachanur samples. When r > ± 0.5 wasconsidered, a total of 22 positive and 3 negative correlations in Eachanur samples; 18 positive and 9negative correlations in V. Mallenahalli samples; 31 positive and 2 negative correlations in Halkurke samples;36 positive and 6 negative correlations in Honnavalli samples; and 18 positive and 5 negative correlations inAlbur samples were found during the analysis. For a better interpretation of the results, the coefficient ofdetermination was used in addition to ‘r’ value.
