液相色谱法测定某燃料中含能组分的测量不确定度评定

Evaluating of uncertainty for determining energy-containing components in the fuel by liquid chromatography

对液相色谱法测定某燃料中含能组分测量结果的影响因素进行分析,对测量结果的不确定度进行评定。测量结果的不确定度主要由测量重复性、样品称量、样品溶液制备时定容体积、标准样品配制引入的不确定度组成,对各不确定度分量进行评定和计算。当含能组分的含量为83.90%时,扩展不确定度为0.51%(k=2)。

The factors influencing the measurement of energy-containing components in the fuel by liquid chromatography was analysed.The uncertainty of measurement was evaluated.The sources of uncertainty of measurement were detection repeatability,sample weighing,volumetric volume of sample solution preparation,standard sample preparation.The expanded uncertainty of measurement result was 0.51%(k=2)as the energy-containing content in the fuel was 83.90%.