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Position: Home > Articles > Evaluation of Uncertainty in Determination of DBP Content in Plastic Packaging Materials by GC-MS Journal of Anhui Agricultural Sciences 2017 (2) 103-105

GC-MS法测定塑料包装材料中DBP含量的不确定度评估

作  者:
赵康;江小平
单  位:
桐城市质量检验检测中心
关键词:
气相色谱-质谱法;食品包装材料;邻苯二甲酸二丁酯;不确定度
摘  要:
[目的]研究塑料包装材料中邻苯二甲酸二丁酯(DBP)含量测定的不确定度,为气相色谱-质谱法检测DBP提供参考。[方法]对DBP整个检测过程的不确定度来源进行了分析,并对不确定度各个分量进行了评估和量化。[结果]以试验方法的数学公式为模型,确定DBP测定过程不确定度的主要来源为标准溶液及其配制过程、样品称量过程、样品定容体积、拟和标准曲线以及样品重复测量过程等,并对这些不确定度各个分量进行了评估和量化,得到合成标准不确定度和扩展不确定度。[结论]从评定的结果可以得出,DBP测定的不确定度主要来源于样品的重复测量和标准曲线拟合过程。
译  名:
Evaluation of Uncertainty in Determination of DBP Content in Plastic Packaging Materials by GC-MS
作  者:
ZHAO Kang;JIANG Xiao-ping;Tongcheng Quality Inspection and Testing Center;
关键词:
Gas chromatography-mass spectrometry(GC-MS);;Food packaging materials;;Dibutyl phthalate(DBP);;Uncertainty degree
摘  要:
[Objective] The uncertainty of DBP content determination in plastic packaging materials was studied,to provide reference for detecting DBP by GC-MS. [Method] The sources of uncertainty in the whole detection process of DBP were analyzed,and each component of uncertainty was evaluated and quantified. [Result] With the mathematical formula of the experimental method as model,the main sources of uncertainty in the determination of DBP were standard solution and its preparation process,the sample weighing process,the sample volume,the standard curve and the repeated measurement process. The components of these uncertainties were evaluated and quantified to obtain the standard uncertainty and extended uncertainty. [Conclusion] The uncertainty of DBP measurement mainly comes from the repeated measurement and standard curve fitting.

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