食品分析水平测试计划农药残留能力验证中分析方法的选择及其结果评价

Selection of the analytical methods and the results evaluation for the determination of pesticides residue in FAPAS proficiency tests

通过确认可靠的分析方法和手段,对FAPAS(食品分析水平测试计划)能力验证样品中的农药组份进行了定性及定量检测。首先通过色-质联用技术对样品中可能含有的农药组份进行快速定性筛选,确定目标化合物,再综合考虑样品中干扰物的主要成分和目标化合物的特性,运用合适的前处理技术和检测方法对目标化合物进行定量分析。在6项FAPAS能力验证中,所有参数的|Z|值均小于2,结果均为满意。

Qualitative and quantitative analyses of pesticides residue in the samples of FAPAS（Food Analysis Performance Assessment Scheme） proficiency tests（PTs）were performed by identified and reliable analytical methods.Firstly,on-line chromatography and mass spectrometry was applied to screen the target compounds from a list of pesticides,and then the characteristics of the samples and the target compounds were evaluated in order to use an appropriate pre-processing technology and detection methods for quantitative analysis once the target pesticides were identified.The ｜Z｜ values of all the parameters in six FAPAS PTs were less than 2,and the results were satisfactory.