Effects of administrative region changes on drinking water-born endemic fluorosis areas in Hangzhou
10.3760/cma.j.issn.2095-4255.2019.01.013
- VernacularTitle:行政区域变动对杭州市饮水型地方性氟中毒病区防治现状的影响
- Author:
Liangliang HUO
1
;
Weimin XU
;
Xingyi JIN
;
Sujuan ZHU
;
Yang YANG
Author Information
1. 杭州市疾病预防控制中心地方病与寄生虫病防治所 310021
- Keywords:
Drinking water;
Fluorine;
Water-improving project;
Fluorosis,dental
- From:
Chinese Journal of Endemiology
2019;38(1):54-56
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of administrative region changes on prevention and control of fluorosis,in order to provide a scientific basis for evaluation and improvement of prevention and control measures.Methods An investigation was conducted in all drinking water-born endemic fluorosis areas in Hangzhou in 2017,to evaluate the status quo of water-improving defluoridation projects,measure the water fluoride content with "the Standard Detection Methods for Domestic Drinking Water" (GB/T 5750.7-2006),detect the dental fluorosis with Dean method and the urinary fluoride content by fluoride selective electrode method in children aged 8 to 12 years old.Results The historical endemic fluorosis areas in Hangzhou now involved 38 natural villages of 22 administrativevillages in 8 townships of 5 counties (cities and districts).All villages had completed water-improving projects which were running well as the fluoride contents of drinking water were less than 1.00 mg/L.The detection rate of dental fluorosis was 1.13％ (9/795) among children aged 8-12 years.A total of 198 urine samples were tested,the urinary fluoride content varied from 0.12 to 2.90 mg/L,and the geometric mean was 0.77 mg/L.Conclusion Administrative region changes do not influence the effect of water-improving defluoridation projects,but management and monitoring of the water-improving projects still should be strengthened.
