Analysis on Iodide Contents in Drinking-water of Mianyang in 2017

Objectives To investigate the level of iodide content in drinking water of Mianyang and to find out its distribution so as to provide basis for adjustment intervention strategies of iodide deficiency disease.

Methods The iodide content in drinking water samples was determined by method -Arsenic cerium catalytic spectrophotometry recommended by national reference laboratory of iodide deficiency.

Results A total of 4 964 drinking water samples were collected from eleven counties (cities, districts) of Mianyang in 2017. The iodide contents were between(0.2~103.1)μg/L. The iodide median was 2.0 μg/L. The iodide content of one sample was greater than 100 μg/L.

Conclusions The iodide median of drinking water samples of eleven counties (cities, districts) in Mianyang was lower than 10 μg/L. According to standard delimitation for the endemic area of iodide deficiency disorder and iodide deficiency, Mianyang was the area of iodide deficiency.