Quick Determination of 15 Pesticide Residues in Liupao Tea by QuEChERS UltraHigh Performance Liquid Chromatography-Tandem Mass Spectrometry
A method was developed for the rapid determination of 15 pesticide residues in Liupao tea by QuEChERS-ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS).The samples were soaked in 1%acetic acid water,then extracted with acetonitrile,and anhydrous sodium acetate and anhydrous magnesium sulfate were added to make the organic and aqueous phases stratified,and the water was removed,and the samples were purified by a mixture of purification tubes of PSA,C18,GCB,and MgSO4,and then analyzed by UPLC-MS/MS.The results showed that the linear correlation coefficients of the 15 pesticide compounds were more than 0.995 9,the limits of detection were in the range of 0.02～0.20 mg·kg-1,the limits of quantification were in the range of 0.04～0.40 mg·kg-1,and the average recoveries were in the range of 63.1%～113.0%at three spiked recoveries levels with the relative standard deviations of 0.1%～8.6%.The method is fast,simple and has good sensitivity,and is suitable for the determination of pesticide residues in Liupao tea.
QuEChERSultra performance liquid chromatography-tandem mass spectrometrypesticide residuesLiupao tea
NETL
NSTL
万方数据
维普
