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目的了解不同的水碘地区人群碘营养状况,食用盐盐碘含量,为科学补碘提供依据。方法每个乡(镇)按东、西、南、北、中不同的方位随机抽取5个村,每个村依据水源数量抽取1～5份饮用水样,测定水碘含量;不同的水碘地区(水碘值<10μg/L、10～μg/L、20～μg/L 7、5～μg/L1、50～μg/L3、00～μg/L、600～μg/L)随机抽取3～5个乡200名以上(男、女各半)8～10岁儿童测定尿碘含量,每个乡随即采取儿童家庭食用盐40份,测定盐碘含量;在水碘值150μg/L以下的乡,随机抽取育龄妇女20名测定尿碘含量;水碘和尿碘浓度检测采用砷铈催化分光光度测定法,盐碘含量检测采用直接滴定法。结果共监测190个乡(镇)水样919份,碘含量在0.15～2840.4μg/L之间,水碘中位数66.38μg/L。水碘值<10μg/L、10～μg/L 2、0～μg/、75～μg/L、150～μg/L、300～μg/L、600～μg/L地区的儿童尿碘中位数、儿童家庭食用盐碘中位数分别是:174.38μg/L、25.41㎎/㎏;145.22μg/L7、.45㎎/㎏;229.58μg/L、16.50㎎/㎏;197.44μg/L、4.45㎎/㎏;257.26μg/L8、.21㎎/㎏;388.40μg/L、3.83㎎/㎏;1506.30μg/L、0㎎/㎏;水碘值<10μg/L、10～μg/L、20～μg/7、5～μg/L地区的育龄妇女尿碘中位数分别是139.61μg/L、131.22μg/L2、25.53μg/L、192.42μg/L。结论在非高碘地区,碘盐是影响人群碘营养的重要因素,盐碘浓度应根据饮用水的碘含量而不同,在水碘小于20μg/L的地区盐碘浓度在20～30㎎/㎏比较适宜;在水碘为20～150μg/L的此区盐碘浓度在10～20㎎/㎏比较适宜。高碘地区应停供碘盐,改水降碘。
Objective To understand the status of iodine nutrition and iodine content of salt in different areas of iodine in water and provide scientific basis for iodine supplementation. Methods Each village (town) randomly selected 5 villages according to different orientations of East, West, South, North and North. Each village sampled 1 to 5 drinking water samples according to the quantity of water and determined the water iodine content. Different iodine (Water iodine value <10μg / L, 10μg / L, 20μg / L, 5μg / L, 5μg / L, 50μg / L, ~ 5 townships More than 200 (male and female half) Urine content of children aged 8 to 10 years, each township children to take 40 servings of salt, determination of salt iodine content; water iodine value below 150μg / L Township, 20 randomly selected women of childbearing age determination of urinary iodine content; water iodine and urinary iodine concentration detection using arsenic cerium catalytic spectrophotometry, salt iodine content detection by direct titration. Results A total of 919 water samples from 190 villages (towns) were monitored. The iodine content was between 0.15 and 2840.4 μg / L and the median water iodine concentration was 66.38 μg / L. The urinary iodine median of children with iodine value <10μg / L, 10μg / L 2,0μg / L, 75μg / L, 150μg / L, 300μg / L and 600μg / L The median of salt and iodine consumption of children and families was 174.38μg / L, 25.41㎎ / ㎏, 145.22μg / L7, .45㎎ / ㎏, 229.58μg / L, 16.50㎎ / ㎏, 197.44μg / L, 4.45水 / ㎏; 257.26μg / L8, .21㎎ / ㎏; 388.40μg / L, 3.83㎎ / ㎏; 1506.30μg / L, 0㎎ / ㎏; water iodine value <10μg / L, The urinary iodine median of women of childbearing age in ~ μg / 7 and 5 ~ μg / L were 139.61μg / L, 131.22μg / L, 25.53μg / L and 192.42μg / L, respectively. Conclusion In non-iodine region, iodized salt is an important factor affecting iodine nutrition of the population. Salt iodine concentration should be based on the iodine content of drinking water. When iodine concentration is less than 20μg / L, salt iodine concentration is 20-30㎎ / ㎏ More appropriate; in the water iodine 20 ~ 150μg / L salt iodine concentration in this area in the 10 ~ 20㎎ / ㎏ more appropriate. High iodine areas should stop for iodized salt, change water iodine.