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Laishram, Nandababu Singh
- Physicochemical Analysis of Ground Water Qualities of Some Areas of Imphal East and Senapati Districts of Manipur during Pre-Monsoon
Authors
1 Post-Graduate Department of Chemistry, D.M. College of Science, Imphal - 795001, Manipur, IN
Source
Asian Journal of Research in Chemistry, Vol 9, No 12 (2016), Pagination: 683-688Abstract
Fifteen ground water samples (S-1 to S-15) were collected from 14 hand pumps and 1 dug well of Imphal East and Senapati Districts of Manipur during pre-monsoon period (May) of 2016.They were analyzed for various physicochemical parameters such as temperature, PH, TDS (total dissolved solids), electrical conductivity (EC), total alkalinity (TA), CO2-3, HCO-3, total hardness (TH), Ca2+, Mg2+, Na+ and Cl-. Only S-9 (dug well of OkshuMayaiLeikai) of Imphal East District is perfectly found to be fit for drinking purpose from physicochemical analysis point of view.However, other remaining ground waters (S-1 to S-8 and S-10 to S-15) may also be used for drinking purpose in absence of alternate sources. In case of S-1 to S-8 and S-10 to S-15, some suitable treatments are necessary so as to keep corresponding values of total alkalinity, total hardness and Mg2+ below their corresponding acceptable limits of BIS standard for drinking water. All the ground waters (S-1 to S-15) are also fit for other domestic and irrigation purposes.
Further, TDS shows strong positive correlatives with Na+, HCO-3, and Cl- but weak positive correlatives with Ca2+ and Mg2+. Again, TA shows strong positive correlations with TDS and EC. As Na+ shows strong positive correlation with HCO-3 (r = 0.814), total alkalinity of such ground waters is mainly due to presence of NaHCO3. Total hardness of such ground waters is also mainly due to CaCl2 and MgCl2 as is evident from strong positive correlations of TH with Ca2+, Mg2+ and Cl-.
Keywords
Physicochemical Parameters, Drinking, Irrigation, Pre-Monsoon, BIS and Correlation Coefficient.- Assessment of Ground Water Qualities of Some Areas of Imphal West District of Manipur during Pre-Monsoon – 4th Phase
Authors
1 Post-Graduate Department of Chemistry, D.M. College of Science, Imphal-795001, Manipur, IN
Source
Asian Journal of Research in Chemistry, Vol 9, No 12 (2016), Pagination: 649-654Abstract
Fifteen ground water samples (S-1 to S-15) were collected from 12 hand pumps and 3 dug wells of Imphal West district of Manipur during pre-monsoon period(May) of 2015. They were analyzed for physicochemical parameters such as temperature, pH, TDS (total dissolved solids), electrical conductivity (EC), total alkalinity (TA) (and hence CO2-3 and HCO-3), total hardness (TH), Ca2+, Mg2+, Na+, K+ and Cl-. Ground waters represented by S-1,S-2,S-10,S-11 and S-13 to S-15 are found to be fit for drinking purpose from physicochemical analysis point of view. But TDS values for S-3 and S-4, total alkalinity values for S-3 to S-9 andS-12, total harness value for S-8, concentration of Mg2+ for S-8, and concentrations of Na+ for S-3 and S-4 are above their corresponding acceptable limits but below the permissible limits of BIS standard for drinking water and threshold limit of WHO (in case of Na+). So, some suitable treatments are necessary so as to keep the values/concentrations of the above mentioned parameters below their corresponding acceptable limits/threshold limit of BIS standard for drinking water and that of WHO. However, ground waters represented by S-3 to S-9 and S-12 are fit for drinking in absence of alternate sources. All the ground waters (S-1 to S-15) are fit for other domestic and irrigation purposes.
Further correlation coefficient data reveals that TA shows strong positive correlations with HCO3-, Na+ and Mg2+ (r= 1, 0.892 and 0.649 respectively) but moderately strong positive correlation with Ca2+ (r=0.541) showing that the total alkalinity of such ground waters is due to the presence of NaHCO3, CaHCO3 and MgHCO3. Strong positive correlations of TH (total hardness) with Ca2+, Mg2+ and HCO3- (r = 0.944, 0.970 and 0.629 respectively) show that total hardness for these different ground waters, is due to the presence of CaHCO3 and MgHCO3.