He realized that defluoridation properties of Serpentine had the potential to treat fluorosis and he engaged with a cross section of scientists and medical professionals to have an inter disciplinary approach to the problem. It was found that serpentine was capable of taking up large quantities of fluoride in aqueous solutions. Most important of them was his work on fluoride bearing waters in A.P., Rajasthan and Gujarat and the work related to incidence of fluorosis, defluoridation of natural waters by Serpentine (a naturally occurring mineral rejected as waste in asbestos mines), designing community defluoridation plants and portable family kits in fluorosis endemic villages. Some of his major works are mentioned in the following paragraphs. Thus, throughout his scientific career, Dr. Rao's research contributions are many and are on various subjects. His research interests included studies in geochemistry and archeological chemistry and developing rapid methods of geo-chemical analysis.ĭr Rao's work in the Department of Mines in the Nizam State and later in the GSI related to the chemical analysis of diverse Geological materials and the Geochemistry of rocks, ores, water, etc.ĭr Rao was deputed briefly at the US Geological Survey in 1958 under the scientific exchange program between the Govt of India and USA.ĭr. He organized field and mobile units for rapid analysis at numerous places. His major role was in planning and developing regional labs and supervision. He planned and developed the Regional labs of Geological Survey of India in its Southern and Western Regions. He organized the Chemical Laboratory of the Department of Mines and Geology, Hyderabad into a full-fledged unit capable of handling diverse modes of analysis. He worked in the Department of Mines and Geology in the erst while Nizam State (1947 – 1952) and in the Geological Survey of India (1952-1978). Dr Rao's active Scientific career started in 1947.
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