Florisil分散固相萃取-液相色谱串联质谱联用法测定水果中氯吡脲的不确定度评定

Uncertainty Evaluation of Forchlorfenuron in Fruits by Florisil Dispersive Solid Phase Extraction -High Performance Liquid Chromatography-Tandem Mass Spectrometry

中文关键词:  液相色谱串联质谱法  不确定度  水果  氯吡脲

英文关键词:high performance liquid chromatography-tandem mass spectrometry  uncertainty  fruits  forchlorfenuron

中文摘要:

      目的 采用Florisil分散固相萃取-液相色谱串联质谱法对水果中氯吡脲残留的不确定度评定。方法 建立该方法的数学模型，对数学模型中各不确定度分量的来源进行分析、量化和合成,得出合成不确定度及其扩展不确定度。结果 当水果中氯吡脲含量为10.0μg/kg时，其扩展不确定度为1.4 μg/kg (k=2)。结论 结果表明不确定度主要由标准溶液、标准曲线的建立及测量随机性因素的不确定度引起。该评估模型为液质联用法测定水果中氯吡脲的不确定度评估提供了参考依据。

英文摘要:

      Objective To establish a mathematical model of uncertainty evaluation of forchlorfenuron in fruits by florisil dispersive solid phase extraction-high performance liquid chromatography-tandem mass spectrometry method. Methods To establish mathematical model of uncertainty using this methord. The sources of the uncertainty components in the mathematical model are analyzed, quantified and synthesized. The combined and expanded uncertainties were evaluated. Results When the measurement result of forchlorfenuron was 10.0 μg/kg, the expanded uncertainty 1.4 μg/kg, k=2. Conclusion The result showed that the uncertainty was mainly caused by the standard solution, the establishment of standard curve, and the uncertainty of measurement. It provided a reference basis for unbertainty evaluation of forchlorfenuron in fruits the uncertainty evaluation provides a reference.