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对EDTA滴定法测定工业锅炉给水总硬度的测量过程进行不确定度评定。充分考虑测量重复性、标准溶液的配制、滴定等过程对测量的影响,计算水中总硬度测量的相对合成标准不确定度为1.01×10-2。
The uncertainty of the measurement of total hardness of industrial boiler feedwater with EDTA titration method was evaluated. Considering the influence of measurement repeatability, preparation of standard solution and titration on the measurement, the relative synthetic standard uncertainty of total water hardness calculation is 1.01 × 10-2.