聚碳酸酯桶中双酚A迁移量测定结果的不确定度评定
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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).
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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[2]王君,许超,慕春玲,李宁,李丽,刘容宏.重复使用下聚碳酸酯饮水桶中双酚A的迁移规律[J].包装工程,2016,37(09):44-48.
[3]柏雨帆.食品包装材料中双酚A检测方法探析[J].现代食品,2018(11):44-46.
[4]张敏娟,安瑜,唐欣,王慧芳,李晓.液相色谱-串联质谱法检测婴幼儿配方乳粉中双酚A和壬基酚[J].农产品加工,2017(23):49-51+55.
[5]张静,张彦波.用ICP-MS测定食品用复合塑料薄膜中的铅、铬及其不确定度评定[J].塑料科技,2013,41(05):100-103.
[6]国家质量监督检验检疫总局.JJF1059.1-2012测量不确定度评定与表示[S].北京:中国标准出版社,2012:8-26.
[7]王欣美,王柯,季申.ICP-MS法测定中药中铜、砷、镉、汞、铅含量的不确定度评定[J].齐鲁药事, 2012, 31(03):136-140.
[8]杨勇,李金霞.工业总排放水中Cr6+含量测量不确定度的评定[J].新疆环境保护,2010, 32(04):20-22+41.