Fluorine distribution in waters of Nalgonda District, Andhra Pradesh, India |
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| Authors: | N V Ramamohana Rao N Rao K Surya Prakash Rao and R D Schuiling |
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| Institution: | (1) Institute of Preventive Medicine, Hyderabad, India;(2) Department of Chemistry, Osmania University, Hyderabad, India;(3) Department of Applied Geochemistry, Osmania University, Hyderabad, India;(4) Department of Geochemistry, Utrecht University, The Netherlands |
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| Abstract: | Geochemical and hydrochemical studies were conducted in Nalgonda District (A.P.), to explore the causes of high fluorine in waters, causing a widespread incidence of fluorosis in the local population. Samples of granitic rocks, soils, stream sediments, and waters were analyzed for F and other salient chemical parameters. Samples from the area of Hyderabad city were analyzed for comparison. The F content of waters in areas with endemic fluorosis ranges from 0.4 to 20 mg/l. The low calcium content of rocks and soils, and the presence of high levels of sodium bicarbonate in soils and waters are important factors favoring high levels of F in waters. |
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| Keywords: | Fluorine Fluorosis India |
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