水中总硬度测定结果的不确定度评定

Evaluation of the uncertainty in the water hardness test

对EDTA滴定法测定水中总硬度的不确定度来源及测量不确定度的影响进行分析,建立有效的数学式,利用相对标准不确定度分量进行测量不确定度的评定。

The sources and the effects of the uncertainty in water hardness test with the EDTA titration method were analyzed. An effective mathematical model has been estabhshed. The uncertainty was evaluated based on the relative standard uncertainty components.