离子色谱法测定卷烟纸中柠檬酸根含量的不确定度分析

Uncertainty evaluation of citrate content in cigarette paper by ion chromatography

为增强测试结果的可信性,依据《CNAS-GL06化学分析中不确定度的评估指南》,评定了离子色谱仪测定卷烟纸中柠檬酸盐的不确定度。结果表明,卷烟纸中柠檬酸盐含量为2.136%,扩展不确定度为0.026%。不确定度的最大来源为仪器的重复测量,其次是药品纯度。

According to CNAS-GL06 Guidance on Evaluating the Uncertainty in Chemical Analysis, uncertainty evaluation of citrate in cigarette paper was assessed by ion chromatography so as to improve the credibility of the test result. The result shows that the concentration of citrate in cigarette paper is 2.136% and expanded uncertainty 0.026%. The main factors affecting determination uncertainty of citrate comes from the repeatability by ion chromatograph, and then the purity of chemicals.