Analysis on the iodine and fluorine content in the domestic drinking water in Handan city

Objective Investigating and analyzing the iodine and fluorine content in the domestic drinking water and its distributions in Handan city,to provide scientific basis for the government to establish prevention measures. Methods Collecting 1 sample of source water from villages with central water supply,3-4 samples of peripheral water at centralized water supply village; Respectively collecting 1 sample based on the different wells depth at the disperse water supply countryside,iodine and fluorine content of the samples were detected.Results 3,325 samples from 16 counties were detected; the water iodine ranged from 0. 1-387. 8 μg /L,513 samples were greater than 150 μg /L,accounted for 15. 43%; among which 19 water iodine medians in countryside were higher than 150 μg /L,accounted for 9. 09% of total villages. 3,340 samples were detected water fluorine,the values ranged from 0. 01 mg /L-3. 90 mg /L,677 values of them were greater than 1. 0mg /L,accounted for 20. 27%. In the iodine deficiency areas at west Handan city,water iodine and fluorine negatively correlated with well depth( r =-0. 160,F = 725. 301,P 0. 001; r =-0. 256,F =1921. 482,P 0. 001); In the high iodine and fluoride district of Handan east,water iodine negatively correlated with well depth( r =-0. 023,F = 51. 145,P 0. 001),water fluorine positively correlated with well depth( r = 0. 261,F = 7226. 592,P 0. 001). Conclusions High iodine and high fluoride district widely dispersed in Handan city,the major task at present stage is to find optimal iodine,fluorine water to reduce the harm of high iodine and high fluoride.