自动电位滴定仪测定磁性材料1YC8中钴的测量不确定度评定  

Evaluation of Uncertainty of Potentiometric Titration of Cobalt in Cobalt Alloy 1YC8 with an Auto-Titrator

作　　者：陈小军[1] 刘虹[1] 

机构地区：[1]重庆仪表材料研究所国家功能材料工程技术研究中心,重庆400700

出　　处：《理化检验（化学分册）》2007年第2期132-134,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：采用自动电位滴定仪测定磁性材料1YC8中钴含量,建立了测量过程分量的数学模型,分析了测量过程不确定度来源及各不确定度分量对总不确定度的影响,确定了测定结果的置信区间。给出磁性材料1YC8中钴的含量及其置信区间为10.92%±0.07%。Cobalt in alloy of 1YC8 was determined potentiometrically with an Auto-titrator. Based on a comprehensive understanding of the whole procedure of the determination, mathematical model for evaluation of uncertainty in measurement was constructed and the sources of uncertainty and their effects on the total uncertainty were analyzed. On the base of the evaluated uncertainties of A type and/or B type, the combined standard uncertainty and finally the expanded or total uncertainty of the method were given. Result of cobalt in the alloy determined by the automatic potentiometric titration with its confidence interval was given as 10. 92%±0. 07 %.

关 键 词：测量不确定度 钴 电位滴定法 置信区间 

分 类 号：O21[理学—概率论与数理统计]