用有证标准样品进行能力验证的方法探讨

Discussion on Method of Certified Reference Material to Proficiency Test

探讨了采用多组有证标准样品进行能力验证的方法 ,该方法对同一个项目选择几种不同标准值的有证标准物质作为测试样品 ,将测试结果统一用偏离度p作为能力量进行评定 ,p =(测试值 -标准值 ) /标准值的不确定度。将该方法应用于湖北省环境监测系统2 0 0 3年能力验证 ,结果表明 ,p具有可比性和统计意义 。

A new method for laboratory proficiency test with serial certified reference material as test samples was discussed to define the degree of deviation as performance assessment, marked with p, p=(test result-reference value)/reference uncertainty. The method was successfully applied to proficiency test of environmental monitoring laboratories in Hubei province, and results showed that it was feasible.