EDTA标准滴定溶液标定及不确定度评定

Be Calibrated and Its Uncertainty Evaluated of EDTA Standard Solution

文章对0.015 mol/L EDTA标准滴定溶液的标定过程产生的不确定度进行了评定。结果表明:不确定度主要来源于稀释倍数,其次是标定过程中消耗的EDTA体积,当配制EDTA的浓度为0.01501 mol/L时,评定其扩展不确定度为0.005%。

The paper tried to preparation and calibration of 0.015 mol/L EDTA standard solution and the uncertainty was evaluated. The results showed that uncertainty came mainly from dilution multiple, followed the volume of EDTA in the calibration process. When the concentration was 0.01501 mol/L of EDTA standard solution, assessing the expanded uncertainty was 0.005 %.