The geochemistry of uranium occurrences and speciation in groundwater of Chinnar sub basin, South India
| Autor: | S. Gopinath, C. S. Suma, K. Saravanan, R. Prakash, K. Srinivasamoorthy, A. Faizal Khan |
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| Rok vydání: | 2016 |
| Předmět: |
Geochemistry
chemistry.chemical_element Charnockite 010501 environmental sciences Uranium Structural basin 010502 geochemistry & geophysics 01 natural sciences chemistry.chemical_compound Uraninite chemistry General Earth and Planetary Sciences Uranium oxide Coffinite Geology Groundwater 0105 earth and related environmental sciences General Environmental Science Gneiss |
| Zdroj: | Arabian Journal of Geosciences. 9 |
| ISSN: | 1866-7538 1866-7511 |
| DOI: | 10.1007/s12517-016-2642-0 |
| Popis: | An attempt has been made in Chinnar sub basin of Dharmapuri district, South India to isolate the geochemistry of uranium occurrences in groundwater. The geology of the area is mainly of charnockite and granite gneiss. Groundwater samples were collected for two different seasons post and pre monsoon in two different litho units (granite gneiss and charnockite) and analysed for major, minor and uranium concentrations. Higher uranium (18.45 μg L−1) has been recorded during pre monsoon season in granite gneiss with increasing pH. The saturation index calculation for the groundwater isolated minerals like uaraninite, coffinite, haiweeite and soddyite to be precipitating and uranium oxides like UO2.25, UO2.25beta, UO2.33beta as oversaturated. The Eh-pH diagram attempted represents solubility of uraninite within the pH range of 6.0 to 8.0. The study isolate uranium in groundwater of the study area is controlled by the presence of (U4O9) uranium oxide. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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