方法直接滴定法检测盐碘质控样，评价测定结果的准确性和可比性。
Methods measure the salt iodine quality control copies using the direct titration method, evaluate the accuracy and comparability of the measure results.
使用国家标准溶液作为质控样，对方法的精密度和准确性做了验证。
The precision and accuracy of method were measured with national standard sample.
目的介绍铅的实验室外质控样的定值和不确定度的评定方法，为提高实验室的检测水平提供帮助。
Objective to introduce the determination of the outer quality control sample in laboratory and the methods of uncertainty assessment for offering assistance in enhancement of laboratory level.
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