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C.?Thivya S.?Chidambaram Tirumalesh?Keesari M.?V.?PrasannaEmail author R.?Thilagavathi V.?S.?Adithya C.?Singaraja 《Environmental geochemistry and health》2016,38(2):497-509
Uranium is a radioactive element normally present in hexavalent form as U(VI) in solution and elevated levels in drinking water cause health hazards. Representative groundwater samples were collected from different litho-units in this region and were analyzed for total U and major and minor ions. Results indicate that the highest U concentration (113 µg l?1) was found in granitic terrains of this region and about 10 % of the samples exceed the permissible limit for drinking water. Among different species of U in aqueous media, carbonate complexes [UO2(CO3) 2 2? ] are found to be dominant. Groundwater with higher U has higher pCO2 values, indicating weathering by bicarbonate ions resulting in preferential mobilization of U in groundwater. The major minerals uraninite and coffinite were found to be supersaturated and are likely to control the distribution of U in the study area. Nature of U in groundwater, the effects of lithology on hydrochemistry and factors controlling its distribution in hard rock aquifers of Madurai district are highlighted in this paper. 相似文献
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Banajarani?Panda S.?Chidambaram N.?Ganesh V.?S.?Adithya K.?Pradeep U.?Vasudevan A.?L.?Ramanathan Shyam?Ranjan M.?V.?PrasannaEmail author K.?Paramaguru 《Environment, Development and Sustainability》2018,20(5):2243-2259
Mountain front recharge (MFR) is the contribution of mountains to recharge the aquifers in the adjacent basins. The estimation of MFR is essential to obtain a detailed investigation of recharge of the groundwater at the mountain front. This study summarises the current understanding of recharge processes by comparing daily groundwater fluctuation to daily rainfall and identifies the recharge rates. The recharge rates vary with time due to difference in water table depth and travel time. Thus to understand the MFR along the foothills of Courtallam, a total of 14 surface water, rainwater and groundwater samples were collected and measured for stable isotopes. The isotopic data were used to investigate the recharge process and to identify the elevations to recharge. The study findings also suggest that predominantly rainfall along the foothills contributes recharge to the riparian zone (basin block region), whereas foothill regions receive recharge from rainfall over mountain block. 相似文献
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Sridhar Adithya Kapoor Ashish Kumar Ponnusamy Senthil Ponnuchamy Muthamilselvi Sivasamy Balasubramanian Vo Dai-Viet Nguyen 《Environmental Chemistry Letters》2022,20(1):901-927
Environmental Chemistry Letters - The advent of microfluidic systems has led to significant developments in lab-on-a-chip devices integrating several functions onto a single platform. Over the... 相似文献
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