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目的运用碘盐复核结果,评估县洛阳市县区碘盐监测质量。方法依据碘酸钾碘盐的稳定性,实验室间误差控制在10.0%的要求,运用小包装盐采集的比率,和2008年、2009年《全国碘盐监测报告》中相对误差大于10.0%的比率,计算抽取的5份复核样品相对误差的分布概率,以此概率和复核结果为依据,判定洛阳市县区碘盐监测的质量。结果采集居民户小包装袋中的碘盐(简称:袋盐)的比率为37.5%。在复核样品中含有相对误差<-10.0%、±10.0%、>10.0%的概率分别为0、0.907和0.877。据此概率判定有7个县区监测质量合格,有3个县区实验室内存在误差,4个县区可能存在实验室内误差或包装不合格,1个县区可能做假。结论通过对县区碘盐复核相对误差的分析,可以判断县区的碘盐监测质量,达到提高监测质量的目的。这种评估方法具在一定的实用性。
Objective To evaluate the quality of iodized salt monitoring in counties and counties of Luoyang County by using iodized salt review results. Methods According to the stability of potassium iodate and iodine salt, the error between laboratories was controlled at 10.0%, the rate of using small package salt was collected, and the relative error of the national iodized salt monitoring report in 2008 and 2009 was more than 10.0% Ratio, calculate the distribution of the relative error of the extracted 5 copies of the sample probability, based on this probability and the results of the review to determine the quality of iodized salt monitoring in counties and districts of Luoyang City. Results The ratio of iodized salt (abbreviation: bag salt) collected in small household bags was 37.5%. The probability of containing relative errors <-10.0%, ± 10.0%,> 10.0% in the rechecked samples was 0, 0.907 and 0.877, respectively. According to this probability, the quality of monitoring in seven counties and districts was qualified, there were errors in the laboratories in three counties, four laboratories in the counties might have errors in the laboratories or unqualified packaging, and one county may be faked. Conclusion By analyzing the relative error of iodized salt review in county, we can judge the quality of iodized salt monitoring in county and improve the quality of monitoring. This assessment method is of some practicality.