建立水质分析的全面质量保证规划措施,尤其搞好实验室的质量保证规划措施,是取得可靠分析结果的重要的技术条件。在分析工作中,目前采用的实验室内部质量控制的方法较多。由于一种控制图一般只能控制某一种指标,因此在常规分析质量控制中分析者希望控制方法越简便越好,方便于日 The establishment of comprehensive quality assurance planning measures for water quality analysis, in particular, the quality assurance planning measures in laboratories is an important technical condition for obtaining reliable analysis results. In the analysis work, there are many ways to control the internal quality of the laboratory at present. As a control chart generally can only control a certain kind of indicator, so in the routine analysis of quality control, analysts hope that the control method as simple as possible, convenient for Japan