Evaluation of aqueous geochemistry of fluoride enriched groundwater: A case study of the Patan district, Gujarat, Western India

Kumar, Pankaj, Singh, Chander K., Saraswat, Chitresh, Mishra, Binaya K. and Sharma, Tejal, (2017). Evaluation of aqueous geochemistry of fluoride enriched groundwater: A case study of the Patan district, Gujarat, Western India. Water Science, 31(2), 215-229

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  • Sub-type Journal article
    Author Kumar, Pankaj
    Singh, Chander K.
    Saraswat, Chitresh
    Mishra, Binaya K.
    Sharma, Tejal
    Title Evaluation of aqueous geochemistry of fluoride enriched groundwater: A case study of the Patan district, Gujarat, Western India
    Appearing in Water Science
    Volume 31
    Issue No. 2
    Publication Date 2017-10
    Place of Publication Online
    Publisher Science Direct
    Start page 215
    End page 229
    Language eng
    Abstract High fluoride (F−) groundwater causes fluorosis which might at severe stages lead to deformation of bones, bilateral lameness. The concentration of F− ranged from 0.4 to 4.8 mg/L. This study suggests that high HCO3− and Na+ in alkaline medium along with water–rock interaction plays important role in enrichment of F− in groundwater. Na-HCO3 is the dominant water type followed by Ca-HCO3 suggesting dominance of Na+, Ca2+ and HCO3− ions in groundwater. Factor analysis of water quality parameters suggests that four principal components account for 74.66% of total variance in the dataset. Factor 1 shows higher positive loading for pH, HCO3− negative loading for F−, Ca2+, SO42− depicting ion-exchange and HCO3 dominant water type responsible for F enrichment in groundwater. Saturation index for selected minerals suggests that most of the samples are oversaturated with calcite and undersaturated with fluorite. Calcite precipitation leads to the removal of Ca2+ from solution thus allowing more fluorite to dissolve. These released Ca2+ ions combine with CO32− ions to further enhance the precipitation of CaCO3.
    UNBIS Thesaurus GROUNDWATER
    Keyword Fluoride
    Rock–water interaction
    Saturation index
    Copyright Holder Elsevier
    Copyright Year 2017
    Copyright type Creative commons
    DOI 10.1016/j.wsj.2017.05.002
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    Created: Thu, 11 Jan 2018, 12:03:16 JST by PEGUES, Susan Scott on behalf of UNU IAS