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    Brief Discussion on Determination of Arbitration in Iodine-Content Testing Method for Iodized Salt
    浅谈加碘盐碘含量测定方法中仲裁法的确定
    Report on national external quality control result for salt iodine in 2004
    2004年全国盐碘外质控结果
    9 9% of market samples and 13 4% of the total 531 samples from households were lower than the national standard, while 18 7% and 13 2% of samples was higher.
    9.9%市售食盐和13.4%的居民食用盐碘含量低于国家标准,另有18.7%的市售食盐和13.2%的居民户食盐碘含量过高。
    Based on the comparison between sodium hypochlorite oxidation method of GB/T13025.7-1999and saturated bromine water oxidation method of GB/T13025.7-91in iodine content testing of iodized salt,saturated bromine water oxidation method of GB/T13025.7-91is recommended as the arbitration of testing io-dine content in iodized salt.
    根据对GB/T13025.7-1999次氯酸钠氧化法和GB/T13025.7-91饱和溴水氧化法测定碘盐碘含量方法的比对,建议用GB/T13025.7-91饱和溴水氧化法作为测定碘盐碘含量的仲裁法。
    Results All 31 provincial laboratories were qualified in the proficiency testing. Feedback rate was 96.4% and qualified rate was 90.9% at prefecture level. At the county level, the feedback rate and qualified rate were 97.8% and 88.8% respectively.
    结果 参加考核3 1个省级盐碘实验室全部反馈了质控结果并全部合格,地市级盐碘实验室反馈率为96.4% ,合格率为90 .9% ,县级盐碘实验室反馈率为97.8% ,合格率为88.8%。
    Results 52 batches of salt were monitored at the first level, 100% of the batches were qualified, the average of iodine was 32.22 mg/kg, the variance coefficient was 16.17% and the standard deviation was 5.21 mg/kg.
    结果全年共监测第一层次碘盐52批次,批质量合格率100%, 盐碘均值32.22 mg/kg,变异系数16.17%,标准差5.21mg/kg;
 

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