标定1mol/L盐酸标准滴定溶液的不确定度分析

Analysis of the Uncertainty of Calibrating 1 mol / L Hydrochloric acid Standard Titration Solution

介绍了按照GB/T601—2002《化学试剂标准滴定溶液的制备》的要求配制并标定1mol/L盐酸标准滴定溶液,分析了标定过程中不确定度的主要来源,依据JJF1059—1999《测量不确定度评定与表示》对最终标定结果的不确定度进行了评定。结果表明,当标定1 mol/L盐酸标准滴定溶液时,由不确定度分量评定得到合成标准不确定度为0.085 4%,其扩展不确定度为0.001 7 mol/L。

The preparation and calibration of 1 mol / L hydrochloric acid standard titration solution was described in accordance with the requirements of GB / T601-2002 ＂the preparation of chemical reagents standard titration solution＂, the main source of uncertainty in the calibration process was analyzed and was the uncertainty of the final calibration result evaluated based on JJF1059-1999 ＂Evaluation and Expression of Uncertainty in Measurement＂. The results show that combined standard uncertainty is 0.085 4% obtained by evaluation of uncertainty components, and the expanded uncertainty is 0.001 7 mol / L when 1 mol / L hydrochloric acid standard titration solution is calibrated.