Study of Uranium Concentration in Drinking Water in Tiruvannamalai District, Tamil Nadu, India and Assessment of Health Risk

Chandramohan, J.; Ganesh, Durai; Harikrishnan, N.; Ravisankar, R.; Chandrasekaran, A.; Neelakantan, M.A.; Raja, Velayutham

doi:10.18576/jrna/030205

Cited by 4 publications

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“…Studies have reported U level in groundwater used for drinking purpose (De Camargo and Mazzilli 1996;Chau and Michalec, 2009;Killiari and Pashalidis 2010;Thivya et al 2015aThivya et al , 2015bBrindha et al 2011a, b;Cho and Choo 2019). The studies have also tried to trace the geochemical processes behind the release of U in groundwater (Mahalakshmi et al 2017, Paramaguru et al 2016Chandramohan et al 2018;Adithya et al 2019Adithya et al , 2020Selvi et al 2016). U occurs in certain types of rocks in three different forms as background, resistant and interstitial modes (Guthrie and Kleeman, 1986;Gueniot et al 1988).…”

Section: Introductionmentioning

confidence: 99%

Potential interplay of Uranium with geochemical variables and mineral saturation states in groundwater

et al. 2021

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Uranium (U) is formed by the interaction of groundwater in aquifer and the surrounding rocks. The area chosen for this study is a hard rock terrain of various lithology in South India, which releases U in groundwater and affect the groundwater quality. Hence, this study was conducted to understand the geochemistry and temporal variations of U in groundwater with respect to saturation state of minerals for different seasons namely Pre-monsoon (PRM), Northeast monsoon (NEM), Southwest monsoon (SWM) and Post-monsoon (POM). A total of 216 groundwater samples were collected, representing various lithology (Fissile hornblende biotite gneiss, Charnockite, Quartzite, Granite and Flood Plain Alluvium) in the study area. The collected samples were analyzed for physical parameters such as Electrical conductivity, Total dissolved solids, pH and major ions. U was measured using Laser Fluorimeter. The study infers that weathering in SWM, ion exchange in PRM and POM and anthropogenic process in NEM were the three major processes that could dominate the hydrogeochemistry of U. The higher concentration of U has been highlighted, and the water–rock interaction has been studied to know the sources of origin and it has been plotted through bivariate and ternary diagrams. The saturation index study was made and calculated for uranium, carbonate, sulfate, silicate and phosphate minerals using PHREEQC Programme. Uraninite and Coffinite are the dominant saturated states of U minerals which tend to attain near saturation to saturation state irrespective of seasons. With the increase in U concentration irrespective of seasons, it was noticed that the saturation state of minerals is also increasing. Overall, the weathering process and the lithological impact are the sources for higher concentration of U and their minerals occurring in the study area. The outcome of the study will help the policy makers for sustainable management to safeguard the groundwater resource in this region.

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