ABC管理在仪器分析质量控制中的应用

Application of ABC management in quality control for instrumental analysis

对现场在线仪器分析质量控制中的A、B、C管理进行了详细介绍,主要包括A、B、C管理的概念、目的以及执行过程。A管理的主要目的是对仪器分析的短期精密度(即短期漂移)进行管理,通过观察标准样品均值x以及平行测定标准样品分析值波动程度R的变动,来实现对分析仪器精密度的监控,也称仪器的漂移校正管理或标准化管理。控制同一分析室内同类分析仪器分析值间的偏差程度,防止在生产过程中因两台仪器切换分析时,出现系列生产样分析值不相衔接等情况的发生,使现场两台同类型仪器的分析值基本一致,将两台同类型的仪器进行对照分析并校正到相互基本一致的工作,称为B管理。将仪器分析值与化学分析值或更高一级别的分析方法测定值进行系统比较,并校正到与化学值基本一致的工作,称为C管理。ABC管理对现场仪器分析的质量控制具有良好的管理及指导作用。

The ABC management for the quality control in on-line analysis was described in detail,including the concept,purpose,and implementation process.The main purpose of A management is to manage the short-term precision(i.e.,short-term drift)for analysis instrument.In this process,some selected certified reference material were used for checking the analysis instrument while the changes in the mean xand the range Rof two measurement results were monitored.By this way,an effective precision control for the analysis instruments were achieved and the A management is also known as the drift correction management or the standardized management for the instruments.By controlling the deviation between the results gotten from different analysis instruments of the same kind in one laboratory,the consistent analysis results could be gotten.In the production process,when a batch of products was analyzed,the deviation caused by switching the analysis instrument to another could be eliminated.The work that compares and corrects the results gotten from two analysis instrument is called B management.And the work that compares the results gotten by the instrumental analysis with the result gotten by chemical analysis or other high-level analysis and makes them consistent is called C management.The ABC management could provide good management and guidance for the quality control during on-line analysis.