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目的:对过硫酸铵消化处理尿液,砷铈催化还原法测定碘结果的不确定度结果进行评定。方法:统计分析和量化样品测量中的不确定度。结果:尿碘实验室测定方法的标准不确定度为2.95μg/L及扩展不确定度为5.9μg/L。结论:发现影响尿碘检测准确性的影响因素。
OBJECTIVE: To evaluate the results of urinary sodium persulfate digestion treatment and the uncertainty of iodine determination by arsenic cerium catalytic reduction method. Method: Statistical Analysis and Quantification of Uncertainty in Measurement of Samples. Results: The standard uncertainty of the urinary iodine laboratory method was 2.95 μg / L and the extended uncertainty was 5.9 μg / L. Conclusion: It is found that the influencing factors on the accuracy of urine iodine detection.