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目的了解国家第四次下调盐碘含量前后珠海市居民食用碘盐的碘含量变化。方法按GB/T 13025.7-1999《直接滴定法》测定2011和2013年居民食用盐碘含量,利用SPSS 17.0统计软件,计算并比较分析调整前后碘含量变化。结果 2011年调整盐碘含量前和2013年调整后的珠海市碘盐覆盖率分别是98.67%和98.57%(P>0.05);碘盐合格率分别为99.26%和94.56%(P<0.01);碘盐含碘量均值分别是30.43和24.41mg/kg(P<0.01)。结论珠海市调整盐碘含量政策得到落实,调整后的碘盐合格率下降。
Objective To understand the changes of iodine content of iodized salt in Zhuhai residents before and after the fourth national salt iodization. Methods According to the “direct titration method” of GB / T 13025.7-1999, the iodine content of residents in 2011 and 2013 was measured. The changes of iodine content before and after adjustment were calculated and compared by SPSS 17.0 statistical software. Results The coverage of iodized salt in Zhuhai City was 98.67% and 98.57% respectively before adjustment of salt iodine content in 2011 and that of adjustment in 2013 (P> 0.05). Passing rate of iodized salt was 99.26% and 94.56% respectively (P <0.01). The average iodine content in iodized salt was 30.43 and 24.41 mg / kg, respectively (P <0.01). Conclusion Zhuhai adjust salt iodine content policy has been implemented, the adjusted iodized salt pass rate decreased.