Hydrochemical characteristics and seasonal variations in groundwater quality of an alluvial aquifer in parts of Central Ganga Plain,Western Uttar Pradesh,India |
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| Authors: | Rashid Umar Izrar Ahmed Fakhre Alam Mohammad Muqtada Khan |
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| Institution: | (1) Department of Geology, Aligarh Muslim University, Aligarh, 202 002, India |
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| Abstract: | The present study was undertaken to assess major ion chemistry of groundwater in parts of the Central Ganga Plain and observe
seasonal variations in its chemical quality. Systematic sampling was carried out during November 2005 and June 2006. The major
ion chemistry of groundwater shows large variations, so much so that at times the meteoric signature seems to be completely
obliterated. In many samples the concentrations of SO4, NO3 and F are above the permissible limit for human consumption. The graphical treatment of major ion chemistry helps in identifying
four types of groundwater. All possible ionic species such as NaCl, KCl, NaHCO3, NaSO4, KNO3, NaNO3, CaHCO3, MgHCO3, MgSO4 are likely to occur in groundwater system. The observed chemical variations may be attributed to sediment water interaction,
ion exchange, dissolution mechanisms and anthropogenic influences such as application of fertilizers and effluents from sugar
factories and paper mills. A general increase in TDS is observed in samples during June 2006. The increase in salinity is
attributed to evaporation from water table, irrigation return flows, anthropogenic activities and below average rainfall in
2005 and 2006.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. |
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| Keywords: | Chemical characteristics Mixing phenomenon Seasonal variations Drinking water quality Western Uttar Pradesh India |
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