This standard specifies the determination of endemic fluorosis areas and the division of endemic fluorosis severity in my country. This standard applies to the determination of endemic fluorosis areas and the division of endemic fluorosis severity based on natural villages (towns). GB 17018-1997 Endemic fluorosis area division standard GB17018-1997 standard download decompression password: www.bzxz.net

GB17018—1997
This standard is based on the research on prevention and control measures of coal-burning pollution-type fluorosis in the Three Gorges of the Yangtze River and the comparative analysis of the epidemiological survey of drinking water-type and coal-burning pollution-type fluorosis, and is compiled by consulting relevant prevention and control and research materials at home and abroad, and referring to relevant standards. This standard replaces the ward division standard in the "Standard for the Prevention and Control of Endemic Fluorosis (Trial)" (Zhongdibanfa [1981J6]. The original standard only included the fluoride content in drinking water in the environmental oxygen content index, which was only applicable to the division of drinking water-type endemic fluorosis wards. According to the actual situation and characteristics of the complex types of wards in my country, this standard adds the prevalence of defective fluorosis and total fluoride intake, and formulates a standard that is suitable for the division of drinking water-type wards and other types of wards. This standard adopts the indicator of fluoride content in drinking water in the original standard, because this indicator has been proven by many years of prevention and control work practice to be an appropriate objective environmental indicator for the division of drinking water-type endemic fluorosis wards of different degrees. This standard is proposed by the Ministry of Health of the People's Republic of China. This standard was drafted by the Fluorosis Research Institute of the China Endemic Disease Control and Research Center, and was drafted by the Epidemiology Teaching and Research Section of China Medical University, the Hebei Provincial Endemic Disease Control and Prevention Institute, and the Jiangsu Provincial Health and Epidemic Prevention Station. The main drafters of this standard are: Sun Yufu, Dai Guojun, Yang Shiming, Gu Tidong, and Teng Guoxing. This standard is interpreted by the Chinese Academy of Preventive Medicine, the technical management unit entrusted by the Ministry of Health. 489bzxZ.net
1 Scope
National Standard of the People's Republic of China
Divide standard of endemic fluorosis areas
Divide standard of endemic fluorosis areas This standard specifies the determination of endemic fluorosis areas in my country and the division of the degree of endemic fluorosis areas. GB 17018—1997
This standard applies to the determination of drinking water-type and coal-burning pollution-type endemic fluorosis areas and the division of the degree of endemic fluorosis areas based on natural villages (electricity).
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB5749-85 Sanitary standard for drinking water GB5750-85 Standard test method for drinking water GB16396-1996 Clinical classification diagnosis of endemic skeletal fluorosis WS/T87-1996 Sanitary standard for total fluoride intake of the population 3 Determination and division conditions of disease areas
3.1 Determination of disease areas
3.1.1 The prevalence of dental fluorosis in children aged 8 to 12 years old born and raised in the local area is greater than 30%. 3.1.2 Drinking water-type endemic fluorosis disease area, the fluoride content of drinking water is greater than 1.0mg/L Coal-burning pollution-type endemic fluorosis disease area, due to coal-burning pollution, the total fluoride intake is greater than 3.5mg.
3.2 Division of severity of disease area
3.2.1 Mild disease area
a) The prevalence of dental fluorosis among children aged 8 to 12 years old born and raised locally is greater than 30%; b) X-ray examination confirms that there is no skeletal fluorosis or mild skeletal fluorosis patients; c) The fluoride content in drinking water is greater than 1.0mg/L or the total fluoride intake is greater than 3.5mg. 3.2.2 Moderate disease area
a) The prevalence of defective dental fluorosis is greater than 20%; b) X-ray examination confirms that there are moderate skeletal fluorosis patients, and the number of severe skeletal fluorosis patients is less than 2%; c) The fluoride content in drinking water is greater than 2. 0mg/L or the total fluoride intake is greater than 5.0mg. 3.2.3 Severely ill areas
a) The prevalence of defective dental fluorosis is greater than 40%; b) The number of patients with severe skeletal fluorosis confirmed by X-ray examination is greater than or equal to 2%; c) The fluoride content in drinking water is greater than 4.0 mg/L or the total fluoride intake is greater than 7.0 mg. 3.3 When the fluoride content in the environment does not match the condition of the disease, the condition shall prevail. Approved by the State Administration of Technical Supervision on October 6, 1997 490
Implemented on October 1, 1998
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