摘要
采用水泥氯离子含量成分分析标准样品GSB 08-2047—2013作为质控样品,依据GB/T 176—2017《水泥化学分析方法》自动电位滴定法检测质控样品的氯离子含量,收集了60组数据,计算平均值、标准偏差,得到中心线、警戒限、行动限,建立了X控制图、I控制图、R控制图、MR控制图。结果表明,控制图能够直观地评价水泥氯离子含量检测的准确性、稳定性,能够对自动电位滴定法检测水泥氯离子分析系统进行有效核查。
Certified reference material(CRM)for component analysis of chloride content in cement was used as control sample,chloride content of control sample was detected according to automatic potentiometric titration in Methods for Chemical Analysis of Cement(GB/T 176—2017).60 sets of data were collected respectively,the average value and standard deviation were calculated,the center line,warning limit and action limit were gotten,X contro chart,I control chart,R control chart and MR control chart were established.The results showed that the control charts could intuitively evaluate the accuracy and stability of detection of chloride content in cement,which could effectively verify the analysis system.
作者
梁志娟
LIANG Zhijuan(Guangzhou Zhenghe Engineering Testing Co.,Ltd.,Guangzhou 510470,China)
出处
《化学分析计量》
CAS
2022年第6期78-82,共5页
Chemical Analysis And Meterage
关键词
氯离子
质量控制图
自动电位滴定法
chloride
quality control chart
automatic potentiometric titration
