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Ground Water Levels of Nitrate and Fluoride in Tiruchirappalli East and West Taluka in Tamilnadu India

Author Affiliations

  • 1Research and Development Centre, Bharathiar University, Coimbatore - 641 046, Tamil Nadu, INDIA
  • 2 Department of Chemistry, Kalasalingam University, Krishnankovil - 626 126, Tamil Nadu, INDIA
  • 3 Department of Chemistry, Annai Teresa College, Karaikudi - 630 002, Tamil Nadu, INDIA

Res.J.chem.sci., Volume 5, Issue (9), Pages 42-48, September,18 (2015)


The quality of ground water supplies in Tiruchirappalli Taluk, situated in central part of Tamilnadu has been investigated with respect to fluorides and nitrates, pH, dissolved solids, chlorides. The levels of fluorides and nitrates, pH, TDS and Chloride, dissolved solids and chlorides were found within the safe limits as prescribed by BIS, for more than 95% of the samples. Out of the 61 different borewell samples analysed, selected from different areas of Tiruchirappalli Taluk, 26% of the samples are found to contain fluorides less than 0.50 PPM (lower safe limit prescribed by BIS) and 11.5% of the samples are found to contain more than 1.5 PPM of fluorides (higher safe limit prescribed by BIS) Further it was also found during study that, 16 00% of the borewell samples analyzed were found to contain more than 100.00 PPM of nitrates (measured as NO3 mg/L, safe limit prescribed by BIS). The values of fluorides and nitrates observed in different samples were in the range of 0.19- 2.06 PPM and 0.08 - 308 PPM, respectively.


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