摘要
本文讨论了考核分析质量的几种准则的优缺点和适用范围。用受检仪器和标准物质的不确定度的何种形式的组合应根据具体情况选定。在无法得到仪器不确定度的情况下，采用ｎ次测量的标准偏差的某一倍数代替不确定度是适合的。应保证考核时的严格要求程度不低于常规测量，以避免日常测量时给出“乐观”的测量报告，但也不宜过份严格。因此，在考核中宜采用｜ｘｉ－Ａ｜ｍａｘ≤ｆ（Ｖ，Ｕ），而不是通常的｜ｘ－Ａ｜≤ｆ（Ｕ）的形式（Ａ为标准物质的标准值，Ｕ为其不确定度；ｘｉ为某次的测量值，ｘ为ｎ次测量的平均值，Ｖ为仪器的不确定度）。
The advantages and disadvantages and applicability of some criteria for examining analysis quality with standard reference material are discussed.The combination of the uncertainties of the instrument examined and the reference material should be determined on the basis of specific situations.Without the data of the instrument's uncertainty,it would be applicable to substitute the standard deviation multiplied by certain times for the uncertainty.The result of the examining should not result in more error reported in routine measurements than it realy is.Over strict examining should also be avoided.
出处
《辐射防护》
CAS
CSCD
北大核心
1997年第5期386-390,共5页
Radiation Protection
关键词
分析仪器
标准物质
分析质量
评判
Uncertainty,Combination of Square Sum Root,Uniform Distribution)
