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    Hydrogeochemical analysis and evaluation of groundwater quality in the Gadilam river basin, Tamil Nadu, India

    Access Status
    Fulltext not available
    Authors
    Prasanna, Mohan Viswanathan
    Chidambaram, S.
    Hameed, A.
    Srinivasamoorthy, K.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Prasanna, M.V. and Chidambaram, S. and Hameed, A. Shahul and Srinivasamoorthy, K. 2011. Hydrogeochemical analysis and evaluation of groundwater quality in the Gadilam river basin, Tamil Nadu, India. Journal of Earth System Science. 120 (1): pp. 85-98.
    Source Title
    JOURNAL OF EARTH SYSTEM SCIENCE
    DOI
    10.1007/s12040-011-0004-6
    ISSN
    0253-4126
    School
    Curtin Sarawak - Faculty Office
    URI
    http://hdl.handle.net/20.500.11937/44040
    Collection
    • Curtin Research Publications
    Abstract

    Water samples were collected from different formations of Gadilam river basin and analyzed to assess the major ion chemistry and suitability of water for domestic and drinking purposes. Chemical parameters of groundwater such as pH, electrical conductivity (EC), total dissolved solids(TDS), Sodium (Na+), Potassium (K+), Calcium (Ca+), Magnesium (Mg+), Bicarbonate (HCO -3 ), Sulphate (SO -4 ), Phosphate (PO -4 ) and Silica (H4SiO4) were determined. The geochemical study of the aquatic systems of the Gadilam river basin show that the groundwater is near-acidic to alkaline and mostly oxidizing in nature. Higher concentration of Sodium and Chloride indicates leaching of secondary salts and anthropogenic impact by industry and salt water intrusion. Spatial distribution of EC indicates anthropogenic impact in the downstream side of the basin. The concentration levels of trace metals such as Iron (Fe), Lead (Pb), Nickel (Ni), Bromide (Br), Iodide (I) and Aluminium (Al) have been compared with the world standard. Interpretation of data shows that some trace metals such as Al, Ni and Pb exceed the acceptable limit of world standard. Geophysical study was carried out to identify the weathered zone in the hard rock and contaminated zone by anthropogenic impact in the downstream of river Gadilam. A few of the groundwater samples in the study area were found to be unsuitable for domestic and drinking purposes.

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