摘要
建立了液质联用法测定聚碳酸酯桶中双酚A迁移量结果不确定度评定的数学模型,按照测量不确定度分析及评定程序,对引入的各个不确定度进行分析。结果表明:迁移试验过程和回收率对测量不确定度影响较大;聚碳酸酯桶中双酚A迁移量为0.054 mg/kg,其扩展不确定度为0.005 mg/kg(95%置信水平,k=2)。
A mathematical model for evaluating the uncertainties in the measurement of bisphenol A migration in polycarbonate bucket by liquid chromatography tandem mass spectrometry has been established. According to the uncertainty analysis&evaluation procedures,each introduced uncertainty was analyzed. The results suggested that,the preparation of standard solution and repeated measurement had the larger influence on measurement uncertainties;as bisphenol A migration in polycarbonate bucket was 0.054 mg/kg,its extended uncertainty was 0.004 mg/kg(confidence level at 95%,k=2).
引文
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