2012年易县8—10岁儿童尿碘水平

The urinary iodine level of children at 8-10 years old in Yixian County in 2012

目的了解2012年易县8-10岁学龄儿童尿碘水平。方法全县按东西南北中5个方位各随机抽取1个乡镇，每个乡镇随机抽取1所小学，每所小学随机抽取20人份以上8。10岁儿童尿样，采用尿碘砷铈催化分光光度法测定尿碘含量。结果2012年检测学龄儿童尿样240份，尿碘中位数为256．67gg／L，100μg／L以下的比率〈50％，50I．tg／L以下的比率〈20％。总体尿碘峰值保持在100。400μg／L，呈向右拖尾的正偏态分布。不同年龄、性别、民族、区域学龄儿童尿碘水平比较，差异无统计学意义（P〉0．05）。结论易县学龄儿童尿碘中位数处在适宜范围。为达到理想范围，今后应继续执行食用盐新标准，并加强尿碘的监测和干预。

Objective To know the urinary iodine levels of school-age children at 8-10 years old in Yixian in 2012. Methods Five towns were selected at random in the range of the county according to azimuth （east, west, south, north and center）. One elementary school was randomly chosen in every town of the five. And 20 urine samples of children at 8-10 years old were randomly drawn in every school selected and the iodine contents were determined through arsenic cerium catalytic spectrophotometric method. Results 240 urine samples of school-age children in 2012 were detected, The median urinary iodine was 256.67 lxg/L. The urinary iodine contents of the samples below 100 ~tg/L were less than 50%, and the ones below 50 lxg/L were less than 20%. Overall, the highest values of urinary iodine stayed at between 100-400 ~tg/L, showing positively skewed distribution that was skewed to the right. There was no great disparity in the urinary iodine levels of school aged children from different ages, genders, ethnic and area groups （P〉0.05）. Conclusion The median urinary iodine is at an appropriate range on school-age children in Yixian. We should continue implementation the new standards of edible salt, and continually strengthen the monitoring and intervention of urinary iodine to achieve the desirable range.