高锰酸钾标准溶液标定的不确定度评估

The Uncertainty Evaluation of the Standardization of Potassium Permanganate Standard Solution

评定了按照GB/T601-2002方法配制和标定高锰酸钾标准溶液浓度的不确定度。分析了重复测量、基准物质称量、基准物摩尔质量、基准物纯度、溶液的体积、温度等因素对溶液标定不确定度的影响,评估了各参数的标准不确定度、合成标准不确定度和扩展不确定度,找出了影响高锰酸钾标准溶液标定准确度的主要原因。

This paper evaluates the uncertainty of compounding and standardizing the permanganate standard solution according to GB/T 601-2002 method, repeated measurement, standard substance weighing, mole mass and purity and the volume and temperature of solution on solution standardization, uncertainty, synthesized standard uncertainty and extending standard analyzes the of standard potassium effects of substance, assesses the standard uncertainty of various parameters and finds out the main causes of affecting the standardization of potassium permanganate standard solution.