Geochemical characterization of groundwater from northeastern part of Nagpur urban,Central India |
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| Authors: | Deepali Marghade D B Malpe A B Zade |
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| Institution: | (1) Laxminarayan Institute of Technology, Nagpur, India;(2) Department of Geology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India |
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| Abstract: | Hydrogeochemical investigations are carried out in the northeastern part of Nagpur urban to assess the quality of groundwater
for its suitability for drinking and irrigation purposes. Groundwater samples are collected from both shallow and deep aquifers
to monitor the hydrochemistry of various ions. The groundwater quality of the area is adversely affected by urbanization as
indicated by distribution of EC and nitrate. In the groundwater of study area, Ca2+ is the most dominant cation and Cl− and HCO3
− are the dominant anions. Majority of the samples have total dissolved solids values above desirable limit and most of them
belong to very hard type. As compared to deep aquifers, shallow aquifer groundwaters are more polluted and have high concentration
of NO3
−. The analytical results reveal that most of the samples containing high nitrate also have high chloride. Major hydrochemical
facies were identified using Piper trilinear diagram. Alkaline earth exceeds alkalis and weak acids exceed strong acids. Shoeller
index values reveal that base-exchange reaction exists all over the area. Based on US salinity diagram most of samples belong
to high salinity-low sodium type. A comparison of groundwater quality in relation to drinking water standards showed that
most of the water samples are not suitable for drinking purpose. |
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