Determination of 31 Pesticide Residues in Xinjiang Lycium chinense Miller by QuEChERS-UPLC-MS/MS Method
Objective:To establish a QuEChERS-UPLC-MS/MS method for the determination of 31 pesticide residues in Xinjiang Lycium chinense Miller.Method:The samples were purified by the improved QuEChERS method,detected by the positive and negative ion scanning and multi-reaction monitoring mode,and quantified by matrix matching standard solution external standard method.Result:In the range of 0.001～0.200 mg·L-1,the linear correlation coefficients of 31 target compounds were greater than 0.996,the recoveries were 70.2%～111.4%,the relative standard deviations were less than or equal to 11.3%,and the detection limits were 0.01～7.97 μg·kg-1.Conclusion:The method is rapid,simple,accurate and has strong applicability,and can be used for rapid screening and confirmation of pesticide residues in Lycium chinense Miller samples with high sugar content.
QuEChERSXinjiang Lycium chinense Millerpesticide residuesultra-performance liquid chromatography-tandem mass spectrometry
万方数据
维普
