Simultaneous Determination of 26 Mycotoxins in Notoginseng Radix et Rhizoma by QuEChERS-Ultra-High-performance Liquid Chromatography-Tandem Mass Spectrometry
To establish a method for the simultaneous determination of 26 kinds of mycotoxins in traditional Chinese medicine Notoginseng Radix et Rhizoma using a QuEChERS pretreatment procedure coupled with ultra-high-performance liquid chromatography-tandem mass spectrometry(UHPLC-MS/MS).Methods:The samples were pretreated with QuEChERS method,extracted with 15% formic acid in acetonitrile,purified by mixed absorbents,as well as analyzed by UHPLC-MS/MS.Matrix-matched calibration curves and internal standards were used for accurate quantification.Results:Satisfactory recoveries at low,medium and high spiked levels were ranged from 80.1% to 116.2%(n=5).Good linear relationships were obtained and the correlation coefficients(r2)were greater than 0.99.The limits of detection(LODs,S/N=3)and quantification(LOQs,S/N=10)ranged from 0.05 μg/kg to 6.25 μg/kg and from 0.2 μg/kg to 20.0 μg/kg,respectively.Conclusion:The proposed method is simple,rapid and valuable,which can be a powerful tool for quantitative analysis of the 26 mycotoxins in Notoginseng Radix et Rhizoma.