NDLI: Hydrogeochemical study of shallow carbonate aquifers, Rameswaram Island, India

Content Provider	Springer Nature Link
Author	Krishna Kumar, S. Chandrasekar, N. Seralathan, P. Godson, Prince S. Magesh, N. S
Copyright Year	2011
Abstract	Groundwater quality assessment has been carried out based on physicochemical parameters (pH, EC, TDS, CO3, HCO3, Cl, SO4, PO4, NO2, Ca+2, Mg+2, Na+ and K+) and metal concentration in the Rameswaram Island from 25 bore wells. The Langelier Saturation Index of the groundwater shows positive values (63% samples) with a tendency to deposit the CaCO3 in the majority of water samples. Scatter plot (Ca + Mg/HCO3) suggests carbonate weathering process, which is the main contributor of Ca2+, Mg2+ and HCO3 ions to the water. Gibbs diagram suggests rock–water interaction dominance and evaporation dominance which are responsible for the change in the quality of water in the study area. NaCl and mixed CaNaHCO3 facies are two main hydrogeochemical facies of groundwater. Mathematical calculations and graphical plots of geochemical data reveal that the groundwater of Rameswaram Island is influenced by natural weathering of rocks, anthropogenic activities and seawater intrusion due to over exploitation. Weathering and dissolution of carbonate and gypsum minerals also control the concentration of major ions (Ca+2, Mg+2, Na+ and K+) in the groundwater. The nutrient concentration of groundwater is controlled to a large extent by the fertilizers used in agricultural lands and aquaforms. Comparison of geochemical data shows that majority of the groundwater samples are suitable for drinking water and irrigation purposes.
Starting Page	4127
Ending Page	4138
Page Count	12
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	184
Issue Number	7
e-ISSN	15732959
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-08-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Groundwater quality assessment Hydrogeochemistry Carbonates aquifers Major ions Heavy metals Rameswaram Environmental Monitoring/Analysis Ecology Ecotoxicology Environmental Management Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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