摘要
目的:建立基于QuEChERS-气相色谱串联质谱法(GC-MS/MS)同时检测茶叶中烯虫乙酯、烯虫炔酯、格螨酯、氟除草醚、环螨酯、草枯醚6种农药残留的分析方法。方法:样品经QuEChERS前处理后,采用气相色谱分离、多反应监测(MRM)模式进行检测,外标法定量。结果:6种农药在0.025~2.000 mg/kg的质量浓度范围内线性良好,相关系数均>0.999,检出限为0.000 6~0.007 2 mg/kg。在0.002 5,0.05,1.0 mg/kg 3个水平的加标回收试验中,回收率为84.3%~116.3%,相对标准偏差(RSD)为1.07%~6.15%。结论:该方法快速、简便、准确,适用于茶叶中6种农药残留检测。
Objective:This study aimed to establish a method by using QuEChERS-gas chromatography tandem mass spectrometry(GC-MS/MS),to determine six pesticide residues in tea,including:hydroprene,kinoprene,genite,fluronitrofen,cycloprate,and chlornitrofen.Methods:The samples were pretreated by QuEChERS method.They were separated by gas chromatographic,detected by multiple reaction monitoring(MRM) mode and quantified by the external method.Results:All the pesticide residues showed good linearity with correlation coefficients above 0.999 when the concentration falls in the range 0.025~2.000 mg/kg,and the limits of quantitation were in the range of 0.000 6 ~0.007 2 mg/kg.In the recovery experiment of 0.002 5 mg/kg,0.05 mg/kg,and 0.5 mg/kg at three concentrations,the average recoveries were 84.3%5~116.3%,and the relative standard deviations(RSDs) were 1.07%~6.05%.Conclusion:The method is rapid,simple,and accurate,which is suitable for the detection of these six pesticide residues in tea.
作者
吴汉彬
WU Han-bin(Quality Inspection Institute of Quanzhou,Quanzhou,Fujian 362000,China)
出处
《食品与机械》
CSCD
北大核心
2023年第6期55-58,111,共5页
Food and Machinery
