Fluorosis caused by indoor coal combustion in China: discovery and progress |
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Authors: | Baoshan Zheng Daishe Wu Binbin Wang Xiaojing Liu Mingshi Wang Aimin Wang Guisen Xiao Pugao Liu Robert B. Finkelman |
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Affiliation: | (1) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, The Chinese Academy of Sciences, Guiyang, 550002, P.R. China;(2) Center of Disease Control in Zhijin County, Zhijin County, Guizhou Province, P.R. China;(3) Center of Disease Control in Weining County, Weining County, Guizhou Province, P.R. China;(4) Department of Geosciences, University of Texas at Dallas, Richardson, TX 75083, USA |
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Abstract: | In this study, investigations into endemic fluorosis were conducted and fluorine concentration in environmental samples determined. In an indoor coal-combustion-type fluorosis area, local clay was used to mix with coal for indoor combustion. There are two key steps in the procedure of the indoor transition of fluorine: indoor wet corns and vegetables strongly absorbed fluorine from indoor air; and fluorine strongly accumulated in clay, which was mixed with coal for combustion. Therefore, with the increasing of the percentage of clay in the clay-mixed coal as well as corn in foodstuff, the ratio of fluorosis will be increased. |
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Keywords: | Coal Clay Fluorosis |
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