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目的了解唐山市居民生活饮用水水碘含量现状以及对8~10岁儿童尿碘水平的影响,为完善碘缺乏病防治策略提供科学依据。方法唐山市范围内以行政村为单位,采集每个村饮水水源水样,测定水碘含量;按要求在各县区各随机抽取的5所小学中各随机抽检20名8~10岁儿童(男、女各半)的尿样。比较县区之间水碘含量、尿碘水平;按是否为沿海地区将县区分城两组,比较两组之间水碘、尿碘是否存在差异;探讨水碘含量与儿童尿碘水平之间的相关性。结果共调查水源8 337个,覆盖全市14个县市区、5 351个行政村。各县区水碘含量在0~64.93 ug/L之间;其中水碘值<10 ug/L的水源为7 764个,占总水源数的93.13%;沿海的4个县区水碘含量高于非沿海的地区,差异有统计学意义(Z=-2.26,P<0.05)。共检测尿样1 501份,尿碘中位数为230.7 ug/L,尿碘含量低于50 ug/L的比例为5.2%;沿海的4个县市区尿碘水平与非沿海地区差异无统计学意义(Z=-0.42,P>0.05)。水碘含量与尿碘之水平之间差异无统计学意义(r=0.468,P=0.09)。结论低剂量水碘对儿童尿碘水平影响不明显。该市为外环境碘缺乏地区,仍需实施食盐加碘防治碘缺乏病的政策;儿童尿碘水平达到了国家要求,但应加强居民碘营养监测。
Objective To understand the status quo of water iodine content in drinking water and the urinary iodine level in children aged 8-10 years in Tangshan, and to provide a scientific basis for the prevention and control of iodine deficiency disorders. Methods Tangshan City, within the scope of the administrative village as a unit, collected water samples of drinking water sources in each village, determination of water iodine content; randomly selected according to the requirements of the five primary and secondary counties in each county 20 20 children aged 8 to 10 ( Male and female half) of the urine samples. Compare the water iodine content and urinary iodine level between counties and counties; According to whether it is a coastal area divided into two groups in the county, compare the differences in water iodine and urinary iodine between the two groups; Relevance. Results A total of 8 337 water sources were surveyed, covering 14 cities and districts in the city and 5 351 administrative villages. The water iodine content of all counties was between 0 and 64.93 ug / L, of which 7 764 were water iodine values <10 ug / L, accounting for 93.13% of total water resources. The water iodine content of four counties in the coastal areas was high In non-coastal areas, the difference was statistically significant (Z = -2.26, P <0.05). A total of 1 501 urine samples were tested, the median urinary iodine was 230.7 ug / L, and the urinary iodine content was less than 50 ug / L. The ratio of urinary iodine to non-coastal areas in four coastal counties was 5.2% Statistical significance (Z = -0.42, P> 0.05). Water iodine levels and urinary iodine levels between the difference was not statistically significant (r = 0.468, P = 0.09). Conclusion Low dose of water iodine has no obvious effect on urinary iodine level in children. The city is outside iodine deficiency areas outside the environment, still need to implement salt iodization prevention and control policies of iodine deficiency disorders; urinary iodine levels in children meet the national requirements, but residents should strengthen iodine nutrition monitoring.