RESUMO
Objective To investigate the status of coal-burning-borne fluorosis in Chunmuying Township,Xuanen County,Hubei Province,to provide basis for the prevention of endemic fluorosis and the protection of the health of local population.Methods According to the methods and requirements of Hubei provincial monitoring program,a baseline survey was carried out.Fifteen diseased villages were selected as survey sites to investigate the changes of furnace stove,and to detect 8-12 years old children's dental fluorosis prevalence (Dean method).From 2007 to 2016,50 urine samples of children aged 8 to 12 years of age and 10 samples of dried corn and dried pepper each,were collected each year,and fluorine ion selective electrode method was used to detect fluorine content.Results In 2016,the qualified improved stove coverage rate was 98.84％ (2 733/2 765).The correct utilization rate of the qualified improved stove was 99.56％ (2 721/2 733).Dental fluorosis was 0.84％ (5/596).The correct drying rate of corn and pepper was both 99.10％ (2 740/2 765).The total qualified rate of urinary fluoride in children from 2007 to 2016 was 91.40％ (457/500),the mean value of urinary fluoride concentration was 0.83 mg/L.Fluctuation trend was decreasing year by year.The geometric average of the total fluorine content of dried corn was 3.78 mg/kg,and the range was 0.09-127.10 mg/kg.The geometric average of the total fluoride content of dried chili peppers was 105.26 mg/kg,and the range was 0.13-1 984.90 mg/kg.The content of fluorine in dried corn and dried chili decreased year by year.Conclusion With the deepening of fluoride reduction measures,the fluoride intake of residents has decreased year by year,but the residents are still lived in a high fluoride environment,and the measures of reducing fluoride should be strengthened.
RESUMO
Objective To investigate the status of coal-burning-borne fluorosis in Chunmuying Township,Xuanen County,Hubei Province,to provide basis for the prevention of endemic fluorosis and the protection of the health of local population.Methods According to the methods and requirements of Hubei provincial monitoring program,a baseline survey was carried out.Fifteen diseased villages were selected as survey sites to investigate the changes of furnace stove,and to detect 8-12 years old children's dental fluorosis prevalence (Dean method).From 2007 to 2016,50 urine samples of children aged 8 to 12 years of age and 10 samples of dried corn and dried pepper each,were collected each year,and fluorine ion selective electrode method was used to detect fluorine content.Results In 2016,the qualified improved stove coverage rate was 98.84％ (2 733/2 765).The correct utilization rate of the qualified improved stove was 99.56％ (2 721/2 733).Dental fluorosis was 0.84％ (5/596).The correct drying rate of corn and pepper was both 99.10％ (2 740/2 765).The total qualified rate of urinary fluoride in children from 2007 to 2016 was 91.40％ (457/500),the mean value of urinary fluoride concentration was 0.83 mg/L.Fluctuation trend was decreasing year by year.The geometric average of the total fluorine content of dried corn was 3.78 mg/kg,and the range was 0.09-127.10 mg/kg.The geometric average of the total fluoride content of dried chili peppers was 105.26 mg/kg,and the range was 0.13-1 984.90 mg/kg.The content of fluorine in dried corn and dried chili decreased year by year.Conclusion With the deepening of fluoride reduction measures,the fluoride intake of residents has decreased year by year,but the residents are still lived in a high fluoride environment,and the measures of reducing fluoride should be strengthened.