化学分析实验室标准物质期间核查方法及实例分析

为了保证化学分析实验室的分析质量,根据CNAS相关认可准则要求,讨论了标准物质期间核查的实施。从确定需要期间核查的标准物质以及期间核查的内容两方面介绍了标准物质期间核查的过程。以氢氧化钠标准滴定溶液为例,讨论了标准物质期间核查的方法。结果显示,氢氧化钠标准溶液定值后两个月其状态核查满足计量要求,量值核查结果 ;E_n;1 1,量值稳定。

Methods And Example of Intermediate Check for Chemical Reference Material in Chemical Analysis Laboratory

In order to ensure the quality of chemical analysis laboratory,according to the relevant requirements of accreditation criteria of CNAS, the implementation of intermediate check for reference material was discussed. The process of intermediate check including determining reference material and check content were introduced. NaOH standard titration solution was taken as example, the way and process of intermediate check was studied. The results showed that status check of NaOH standard titration solution after two months met the measurement demand,|En|<1, the value was stable.