摘要目的 调查山东省缺碘地区中“适碘”地区分布,为碘缺乏地区的重新划定及实施科学补碘提供依据.方法 在山东省105个缺碘县(市、区),以村为单位,采集1～3份饮用人数最多的水源样品,水碘含量检测采用砷-铈催化分光光度法.地区划分标准:水碘含量＜ 10 μg/L为低水碘地区；水碘含量10～150μg/L为水碘适宜(适碘)地区；水碘含量＞ 150μg/L为高水碘地区.结果 本次调查涉及了14个市、105个县(市、区)、1337个乡(镇),收集水样65 716份,非空白水样65 572份,回收样品有效率达到99.8％,水碘中位数为5.57 μg/L.被调查的1337个乡(镇)中,有82.05％(1097/1337)的乡(镇)水碘中位数＜10 μg/L;有17.43％(233/1337)的乡(镇)水碘中位数介于10 ～ 150 μg/L;有0.52％(7/1337)的乡(镇)水碘中位数＞150 μg/L.结论 山东省“适碘”地区散在存在,且占有相当比例.在缺碘地区还存在高水碘地区,应重新划定缺碘地区,重视“适碘”地区居民碘营养状况,开展科学补碘.

abstractsObjective To look into the distribution of “iodine suitable” region in iodine-deficient areas in Shandong province and to provide a scientific basis for guiding the redesignate of iodine-deficient areas and launch scientific supply of iodine.Methods One to 3 copies of water source samples were collected in 105 existing iodine-deficient counties by village.Water iodine content was detected by arsenic-cerium catalytic spectrophotometry.The areas with water iodine content below 10 μg/L was defined as iodine-deficient areas and among 10 - 150 μg/L were “iodine suitable areas” and greater than 150 μg/L were high iodine areas.Results The research was carried out in 14 cities,105 counties,and 1337 towns.We collected 65 716 water samples.Sample recovery efficiency reached 99.8％.The median of water iodine was 5.57 μg/L.In the 1337 towns surveyed,there were 82.05％(1097/1337) of the township with water iodine median ＜ 10 μg/L,17.43％(233/1337) between 10 - 150 μg/L,and 0.52％(7/1337) ＞ 150 μg/L.Conclusions In Shandong province,the water “iodine suitable” regions are distributed scattered with considerable proportion.In iodine-deficient areas,there are areas with high water iodine,and iodine-deficient regions should be redrawn.Emphasis should be put on iodine nutritional status of residents in “high iodine and iodine suitable” regions,and iodine supplementation should be carries out scientifically.