GC-MS法测定果冻中邻苯二甲酸二烯丙酯不确定度的方法  

Uncertainty evaluation in determination of diallyl phthalate in jellies by gas chromatography-mass spectrometry(GC-MS)

作　　者：赵妍 ZHAO Yan(Nanjing Institute for Food and Drug Control,Nanjing,Jiangsu 210000,China)

机构地区：[1]南京市食品药品监督检验院

出　　处：《上海预防医学》2019年第6期439-442,共4页Shanghai Journal of Preventive Medicine

基　　金：上海市科委“长三角科技联合攻关领域”项目(18395810300)

摘　　要：【目的】建立气相色谱-质谱法测定果冻中邻苯二甲酸二烯丙酯含量的不确定度方法,以提高实验结果的准确性。【方法】建立不确定度评定的数学模型,分析检测各步骤不确定度来源、计算评估各不确定度分量并计算扩展不确定度。【结果】当果冻中邻苯二甲酸二烯丙酯含量为0.9412mg/kg时,其扩展不确定度为0.0512mg/kg(K=2,P=95%)。【结论】本评估模型中,不确定度主要来源于邻苯二甲酸二烯丙酯标准溶液配置、标准曲线拟合及样品处理过程。[Objective]To establish uncertainty evaluation for the determination of diallyl phthalate in jellies by Gas chromatography-mass spectrometry(GC-MS),thus obtaining accurate results.[Methods]A mathematical model was established and sources of uncertainty during the analysis process that might be introduced were analyzed and quantified.The expanded uncertainty was also calculated.[Results]When the diallyl phthalate content in jellies was 0.941 2 mg/kg,the expanded uncertainty of measurement results was 0.051 2 mg/kg(K=2,P=95%).[Conclusion]In this paper,the main sources of measurement uncertainty are methanol standard solution,standard curve fitting and sample preparation.

关 键 词：果冻 邻苯二甲酸二烯丙酯 气相色谱-质谱法 不确定度 

分 类 号：R195[医药卫生—卫生统计学]