Abstract：Some Top-down methods could be used to rapidly evaluate the measurement uncertainty.The uncertainty estimated by interlaboratory reproducibility standard deviation was significantly higher than that evaluated by GUM method. However, the uncertainty estimated by intermediate precision standard deviation was basically consistent with that evaluated by GUM method, and it was an effective method for uncertainty evaluation in testing laboratory. Meanwhile, it was indicated that intermediate precision data was of important significance for laboratory accuracy control. For the laboratories of reference material characterization which was different from the routine testing laboratories, the stricter indexes should be used to inspect data accuracy. For reference material characterization, the trueness of data obtained under repeatability conditions could be inspected by the limit of laboratory bias (1.96σ), and it was reduced by about 3/4 compared to the critical difference of reproducibility. The trueness of data obtained under intermediate precision conditions could be inspected by the critical difference of intermediate precision (CD′0.95(Rw)), and it was reduced by about 1/2 compared to critical difference of reproducibility. The difference between the certified values of reference material and measurement results from one laboratory could not guarantee to be smaller than the expand uncertainty of reference materials at 95% confidence level.
贾云海, 唐本玲, 孙晓飞, 李志鹏, 张翠敏, 罗岁斌. 中间精密度快速评定不确定度与标准物质定值准确度控制[J]. 冶金分析, 2023, 43(6): 1-11.
JIA Yunhai, TANG Benling, SUN Xiaofei, LI Zhipeng, ZHANG Cuimin, LUO Suibin. Rapid uncertainty estimation by intermediate precision and accuracy control in reference material characterization. , 2023, 43(6): 1-11.
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