气相色谱-质谱联用法测定白酒中邻苯二甲酸二异壬酯的不确定度评定

Evaluation of the Uncertainties in the Determination of Diisononyl Phthalate in Baijiu by GC-MS

通过测定白酒中邻苯二甲酸二异壬酯的含量,评定了气相色谱-质谱联用法(GC-MS)测定结果的不确定度。同时建立数学模型,分析各不确定度分量,将不确定度分量合成,并计算其测定结果的扩展不确定度。

GC-MS was applied to determine diisononyl phthalate content in Baijiu. The uncertainties in the determination process were evalu- ated and the corresponding mathematical models were set up to analyze each uncertainty component. Then the uncertainty components were synthesized and the expanded uncertainty of the measurement results were calculated.