Determination of 63 Kinds of Pesticide Residues in Cherry Using QuEChERS-LC-MS/MS
To establish a method for the simultaneous determination of 63 pesticide residues in chrrry by QuEChERS combined with liquid chromatography-tandem mass spectrometry.The samples were extracted with acetonitrile and purified by SpeedTest-QuEChERS,then analyzed by HPLC-MS/MS with MRM under positive ion mode of electrospray ionization.The linear relationship of 63 pesticides was good in the range of 1.0～200 μg/L,the correlation coefficients were more than 0.996,and the limit of quantification were 0.12～16.0 μg/kg.The recoveries of 63 pesticides at 20,50 and 100 μg/kg levels ranged from 76.9%to 106.7%,and the relative standard deviation was 0.76%～4.52%(n=6).This method has positive signifificance for market access and monitoring of cherry.
liquid chromatography-tandem mass spectormetryQuEChERScherrypesticide residues
万方数据
维普
