气相色谱法测定石油馏分沸程分布的不确定度评估

Evaluation of Uncertainty in Determination of Boiling Range Distribution of Petroleum Fractions by Gas Chromatography

以柴油样品进行沸程分布测定为例,来评估测量不确定度,对其采用《用气相色谱法测定石油馏分沸程分布的试验方法》进行试验,主要分析测量过程和影响不确定度的来源,分别从标准物质、峰面积以及测量重复性三个方面进行分析,同时评定了标准不确定度、相对合成标准不确定度和扩展不确定度。

The boiling range distribution determination of diesel samples was taken as an example to evaluate the uncertainty of measurement.The test method of gas chromatography for the determination of boiling range distribution of petroleum distillates was adopted to conduct the test.The measurement process and the sources affecting the uncertainty were analyzed from three aspects,namely reference material,peak area and measurement repeatability.The standard uncertainty,relative synthetic standard uncertainty and extended uncertainty are evaluated at the same time.