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- Title
Geochemical evaluation of fluoride and groundwater quality for drinking and irrigation purposes in a weathered gneissic rock aquifer of southern penisular India.
- Authors
Subramaniyan, Anbarasu; Karthikeyan, Brindha; Lakshmanan, Elango
- Abstract
Assessment of groundwater chemistry of a region is important to determine its usability. The objective of this study is to understand the hydrochemistry and groundwater quality especially with respect to fluoride in the Perambalur District, Tamil Nadu, India where groundwater is used without treatment for drinking and agricultural purposes. Groundwater samples were collected from 44 locations once every three months between September 2015 and July 2018. Mixed Ca–Mg–Cl, Ca–HCO3, Na–Cl and mixed Ca–Na–HCO3 types were the predominant hydrochemical facies. Fissile hornblende biotite gneissic rocks had more fluoride concentration than the charnockite rocks in the study area. These weathered rocks leach high concentration of fluoride to groundwater. Ion exchange processes played a major role in fluoride dynamics in groundwater. Fluoride concentration was comparatively high in the wells where the groundwater level fluctuation is at deeper levels. Groundwater in most of the wells were suitable for drinking purpose based on the ions analysed, but few wells were unsuitable for drinking and irrigation purposes. Based on health risk assessment, children are likely to be more affected than infants and adults through intake of high fluoride groundwater from the study area.
- Subjects
INDIA; TAMIL Nadu (India); GROUNDWATER quality; HYDROGEOLOGY; HEALTH risk assessment; FLUORIDES; IRRIGATION; AQUIFERS; WATER levels
- Publication
Environmental Earth Sciences, 2022, Vol 81, Issue 9, p1
- ISSN
1866-6280
- Publication type
Article
- DOI
10.1007/s12665-022-10395-9