重铬酸钾滴定液浓度的不确定度分析

Uncertainty Evaluation on the Concentration of Potassium Dichromate Volumetric Solution

目的以重铬酸钾滴定液浓度不确定度的评价为例,建立滴定液浓度不确定度的分析方法。方法对滴定液配制中各种影响因素和各个不确定度分量进行分析。结果计算各因素的不确定度分量,由此得到合成不确定度,最终给出滴定液浓度和扩展不确定度。结论建立的不确定度分析方法适用于直接配制滴定液浓度的不确定度分析。

Objective： To established a method for uncertainty evaluation on the concentration of volumetric solution. Methods： The calculation formula of uncertainty was deduced in the procedure of preparation of the solution. Results： Each components of uncertainty was calculated by analyzing the various variable parameters in the procedures.The combined uncertainty was then finally obtained by synthesizing the uncertainties of various component variables.Conclusion： The mathematic model of uncertainty measurement established in this paper is reasonable and reliable.