赵妍. GC-MS法测定果冻中邻苯二甲酸二烯丙酯不确定度的方法[J]. 上海预防医学, 2019, 31(6): 439-442. DOI: 10.19428/j.cnki.sjpm.2019.19469
引用本文: 赵妍. GC-MS法测定果冻中邻苯二甲酸二烯丙酯不确定度的方法[J]. 上海预防医学, 2019, 31(6): 439-442. DOI: 10.19428/j.cnki.sjpm.2019.19469
ZHAO Yan. Uncertainty evaluation in determination of diallyl phthalate in jellies by gas chromatography-mass spectrometry(GC-MS)[J]. Shanghai Journal of Preventive Medicine, 2019, 31(6): 439-442. DOI: 10.19428/j.cnki.sjpm.2019.19469
Citation: ZHAO Yan. Uncertainty evaluation in determination of diallyl phthalate in jellies by gas chromatography-mass spectrometry(GC-MS)[J]. Shanghai Journal of Preventive Medicine, 2019, 31(6): 439-442. DOI: 10.19428/j.cnki.sjpm.2019.19469

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)

  • 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0.941 2 mg/kg时,其扩展不确定度为0.051 2 mg/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。

     

    Abstract:
    ObjectiveTo establish uncertainty evaluation for the determination of diallyl phthalate in jellies by Gas chromatography-mass spectrometry (GC-MS), thus obtaining accurate results.
    MethodsA 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.
    ResultsWhen 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%).
    ConclusionIn this paper, the main sources of measurement uncertainty are methanol standard solution, standard curve fitting and sample preparation.

     

/

返回文章
返回