热脱附-气相色谱法测定藏香燃后气体中五种苯系物的测量不确定度分析

Uncertainty evaluation of five benzene analogy is compounds in tibetan incense burning products by thermal desorption-gas chromatography

文章采用热脱附-气相色谱法测定藏香燃烧后气体中五种苯系物的含量,对测定过程中产生的不确定度进行分析,得出影响测定结果不确定度的主要因素为标准物质的准确性和采样过程的规范性。根据分析结果,从实验过程给出了减少不确定度的建议。

Thermal desorption-gas chromatography was used to determine the content of five benzene series in the gas after combustion of Tibetan incense,The uncertainty generated in the measurement process is analyzed,it is concluded that the main factors affecting the uncertainty of the determination results are the accuracy of the standard substances and the standardization of the sampling process.According to the analysis results,some Suggestions to reduce the uncertainty are given.