[Study on environmental characteristics of coal smoke fluorosis areas].

Typical samples of coal, the components and contents of coal smoke as well as the concentration of fluoride, SO2, IP, CO in indoor and outdoor air in fluorosis areas of the Three Gorges region were studied with the advanced methods of analysis in the past three years. Problems, such as the fluoride level of other polluted environmental samples, the distribution of different size particles in air, the total amount of inhabitants' fluoride intake and their intake pathways in the above mentioned areas were also studied in detail. A fundamental understanding of the environmental characteristics of these areas has thus been obtained.