摘要
评定了按照GB/T 6 0 1- 2 0 0 2方法配制和标定氢氧化钠标准溶液浓度的不确定度。从仪器、试剂、操作及实验环境方面分析了不确定度来源 ,对不确定度分量进行了分析、计算、合成。氢氧化钠标准溶液浓度的不确定度主要由标定时消耗体积的读数误差产生。在试剂纯度、仪器精度符合规定时 ,氢氧化钠标准溶液浓度的相对扩展不确定度为 0 .14 %。
The uncertainty for the concentration of sodium hydroxide standard solution was evaluated. The solution was prepared and standardized with GB/T 601-2002 method, the components of the uncertainty caused by the apparatus, the reagents, the operator and the environment were analyzed and caculated. It showed by the results that the uncertainty was mainly caused by the titrant volume. When the reagent and the apparatus were conformed to the request, the related expanded uncertainty was 0.14%.
出处
《化学分析计量》
CAS
2004年第3期1-5,共5页
Chemical Analysis And Meterage
关键词
氢氧化钠
浓度
不确定度
容量分析法
邻苯二甲酸氢钾
concentration of the standard solution, sodium hydroxide, uncertainty, evaluation
