2017年攀枝花市生活饮用水水碘含量调查结果

Investigation results of iodine contents in drinking water in Panzhihua City in 2017

目的了解攀枝花市生活饮用水水碘含量分布,为科学补碘提供参考依据。方法 2017年对攀枝花市居民生活饮用水采用分层整群抽样方式进行水碘含量调查,采用国家碘缺乏病参照实验室推荐方法-砷铈催化分光光度法检测样品。结果 2017年共调查5个县(区)60个乡镇(街道),采集生活饮用水水样938份,水碘中位数为0.8μg/L,水碘值范围为0.1~41.1μg/L,99.36%的水样水碘含量<10μg/L,0.64%的水样水碘含量在10~50μg/L之间;60个乡镇(街道)水碘中位数均<10μg/L。泉水水碘中位数低于井水水碘中位数(H=133.879,P<0.05)和集中供水水碘中位数(H=-122.363,P<0.05)。结论2017年攀枝花市所有乡镇(街道)水碘中位数<10μg/L,居民生活饮用水水碘含量处于较低水平,属于碘缺乏地区,应该长期坚持实行全民食盐加碘,以预防并消除碘缺乏病。

Objective To understand the iodine content distribution in drinking water in Panzhihua City,provide the basis for scientific iodine supplement. Methods The investigation of the iodine content in residents’ drinking water in Panzhihua City in2017 was carried out by the method of stratified cluster sampling. And the water samples were determined by method of arsenic cerium catalytic spectrophotometry recommended by national reference laboratory of iodine deficiency. Results A total of 60 towns(townships or streets) of five counties(districts) were surveyed in 2017. A total of 938 drinking water samples were collected and tested,the median of iodine content in drinking water was 0.8 μg/L,iodine values in drinking water were in the range of 0.1-41.1 μg/L. 99.36% water samples had the results of iodine content less than 10 μg/L,and 0.64% samples had the results of iodine content in the range of 10-50 μg/L. The median of iodine content in water in 60 towns(townships or streets) were less than10 μg/L. The median of iodine content in spring water samples was lower than that in well water samples(H=133.879,P<0.05)and centralized water supply samples(H=-122.363,P<0.05). Conclusion The median of water iodine in all towns(sub-districts)in Panzhihua City in 2017 are less than 10 μg/L. The iodine content in residents’ drinking water is on the low level,and Panzhihua City belongs to iodine deficiency area. It is necessary to adhere to the policy that implementation of universal salt iodization for long time to eliminate iodine deficiency disorders.