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目的了解重庆市消除碘缺乏病阶段目标后不同人群碘营养状况,为进一步调整食盐加碘浓度提供科学依据。方法 2011年在重庆市采用人口比例概率抽样法抽取30个监测点,每点抽取1所小学8～10岁儿童40名,调查儿童盐碘、尿碘、日均摄食盐量以及孕妇和哺乳期妇女尿碘。尿碘采用砷铈催化分光光度方法(WS/T107-2006)测定,盐碘采用直接滴定法(GB/T13025.7-1999),摄入食盐量采用3日称量法进行测算。结果共调查食用盐1322份,碘含量中位数为29.90mg/kg,碘盐覆盖率、碘盐合格率、合格碘盐食用率分别为99.62%、96.67%、97.04%。调查367户,居民每天摄入食盐量为8.4g。共调查8～10岁儿童、孕妇、哺乳妇女分别为1322名、462名、451名,尿碘中位数分别为254.1μg/L、223.9μg/L、219.6μg/L,<100μg/L比例分别占9.68%、12.86%、14.07%,300μg/L以上比例分别占36.38%、32.59%、31.82%;儿童、孕妇、哺乳妇女尿碘中位数比较差异有统计学意义(H=15.78,P<0.01)。结论总体上重庆市不同人群碘营养充足,但同时存在碘不足和碘过量现象。
Objective To understand the status of iodine nutrition in different populations after eliminating iodine deficiency disorders in Chongqing and to provide a scientific basis for further adjustment of iodized salt concentration in Chongqing. Methods In 2011, 30 monitoring points were sampled in Chongqing with the Probability of Population Probability sampling method, and 40 children aged 8 to 10 were selected at each point. Salt, urinary iodine, daily salt intake and pregnant and lactating children were investigated. Women urinary iodine. Urine iodine was determined by arsenic-cerium catalytic spectrophotometry (WS / T107-2006), salt iodine by direct titration (GB / T13025.7-1999), salt intake by 3-day weighing method. Results A total of 1322 edible salt were investigated. The median iodine content was 29.90 mg / kg. The coverage of iodized salt, the qualified rate of iodized salt and the qualified iodized salt were 99.62%, 96.67% and 97.04% respectively. 367 households surveyed, residents daily intake of salt is 8.4g. A total of 1322, 462 and 451 pregnant women and 45 lactating women were enrolled in this study. The median urinary iodine concentrations were 254.1μg / L, 223.9μg / L, 219.6μg / L and <100μg / L, respectively Accounting for 36.38%, 32.59% and 31.82% respectively, accounting for 9.68%, 12.86%, 14.07% and 300μg / L, respectively. The median urinary iodine in children, pregnant women and lactating women was significantly different (H = 15.78, P <0.01). Conclusion In general, different populations in Chongqing have adequate iodine nutrition, but there are both iodine deficiency and iodine excess.