氢醌滴定法测定金矿石中金的不确定度评定

Uncertainty Evaluation of Measurement Results of Gold in Auriferous Ore Samples by Hydroquinone Titration

摘要: 以氢醌滴定法测定金矿石中贵金属金的实例进行不确定度评定。测量结果的不确定度由配制金标准母液、金标准工作液、氢醌滴定液浓度、称样质量、滴定样品所用氢醌溶液体积等所引入的不确定度分量组成。在对各个不确定度分量进行量化的基础上，通过合成得到测量结果的标准不确定度，再乘以95％置信概率下的扩展因子2，得到测量结果的扩展不确定度。

Abstract: The uncertainty of gold content determined with hydroquinone titration has been evaluated in this example. The uncertainty of measuring results comes from the fractions of preparation of the standard gold solution and its further dilution to the working s