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目的了解天津市饮用水水碘分布特征,确定是否存在水源性高碘及水源性高碘的分布情况。方法采用普查的方式进行,对天津市全部的涉农区县以村为单位,对深层饮用地下水源进行水碘含量检测。水碘含量检测采用砷铈催化分光光度法,评价按国标《水源性高碘地区和地方性高碘甲状腺肿病区的划定》的标准确定。结果调查的149个乡镇中,有40个乡镇水碘中位数小于10μg/L,占26.85%,属于低水碘地区;有94个乡镇水碘中位数在10～150μg/L之间,占63.09%,属于适水碘地区;有11个乡镇水碘中位数在150～300μg/L之间,占7.38%,属于水源性高碘地区,有4个乡镇水碘中位数大于300μg/L,占2.68%,按国家标准暂划为水源性高碘病区。结论天津市存在水源性高碘现象,主要分布在静海县和大港区。应进一步开展高碘对健康的影响及干预措施的研究。
Objective To understand the distribution characteristics of water iodine in drinking water in Tianjin and determine whether there is a distribution of high water iodine and high water iodine. Methods The method of census was used to test the water iodine content of deep drinking groundwater sources in all agricultural districts in Tianjin. Water iodine content detection using arsenic and cerium catalytic spectrophotometry, evaluation according to national standard “high water iodine regions and endemic high iodine goiter designated” criteria to determine. Results Among the 149 villages and towns investigated, the median iodine in water of 40 villages and townships was less than 10μg / L, accounting for 26.85%, belonging to the low water iodine area. The median iodine concentration of 94 townships was between 10 and 150μg / L, Accounting for 63.09%, which belongs to the area suitable for water-iodine. The median of iodine in 11 townships is between 150 and 300 μg / L, accounting for 7.38% / L, accounting for 2.68%, according to the national standard tentatively scheduled for water-based high iodine disease area. Conclusion There are water-borne high iodine in Tianjin, mainly distributed in Jinghai County and Dagang District. Should be further carried out high iodine health effects and interventions.