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[目的 ]了解徐州地区自然环境中饮用水碘的地理分布情况 ,为本地区碘缺乏病防治提供依据。 [方法 ]共调查 2 2 4个乡镇 912个行政村 ,按人口比例概率抽样法确定采样点 ,采集水样 2 766份。用硫酸铈接触法测定水碘含量。 [结果 ]水碘范围在 1～ 2 74 4 .0 μg/ L,水碘中位数 13 3 .0 μg/ L。有 115个乡 (镇 )水碘中位数≤ 10 0 μg/L,有 67个乡镇水碘中位数≥ 3 0 0 μg/ L。 [结论 ]徐州地区居民饮水碘含量地理分布呈西高东低趋势 ,共有 115个乡镇为水源型低碘甲状腺肿流行区 ,面积 7985 km2 ,人口 4 64万人 ,共有 67个乡镇为水源型高碘甲状腺肿流行区 ,流行范围约 5 0 0 0 km2 ,人口约 2 88万。
[Objective] To understand the geographical distribution of drinking water iodine in natural environment in Xuzhou, and to provide evidence for the prevention and treatment of iodine deficiency disorders in this area. [Method] A total of 224 administrative villages in 224 townships were surveyed, sampling points were determined according to the probabilistic sampling method of population proportion, and 2 766 samples were collected. Determination of water iodine content by cerium sulfate contact method. [Result] The range of water iodine was 1-274 4 .0 μg / L and the median of water iodine was 13 3 .0 μg / L. There were 115 villages (towns) with a median water iodine value ≤ 10 0 μg / L and a median of 67 townships water iodine ≥ 300 μg / L. [Conclusion] The geographical distribution of drinking water iodine content of residents in Xuzhou showed a trend of west-east and east-low. A total of 115 villages and towns belonged to the low-iodine goiter endemic area of water source type with an area of 7,985 km2 and a population of 64.4 million with a total of 67 towns and townships being high iodine The endemic goiter area has a prevalence of about 50,000 km2 and a population of about 2,880,000.