Solid Phase Extraction Followed by Liquid Chromatography Tandem Mass Spectrometry for the Determination of Organophosphorus Pesticide Residues in Lycium barbarum L.
Abstract：This study developed a quick and specific method for the identification and quantification of pesticide residues in Lycium barbarum L.Samples were extracted using acetonitrile,and extracts were cleand up by solid-phase extraction on a Carbon/NH2（SPE） cartridge,blowed to dryness by nitrogen,and dissolved in a mixture of acetonitrile and water（3：2,V/V） prior to LC-MS/MS analysis in a select reaction monitoring（SRM） mode.The limits of detection（LODs） ranged in 0.12～9.8μg/L.The regression equations were well linear between 10.0 and 200.0 μg/L for these steroids（r0.9961）.The recoveries ranged from 80.7% to 122.4% with a RSD of 2.75%～14.7% at three spiked levels of 20～100μg/L.The method is simple,sensitive and rapid and therefore can be used for the determination of organophosphorus pesticide residues in Lycium barbarum L.
Keywords：solid-phase extractionLC-MS/MSorganophosphorus pesticide residuesLycium barbarum L
Publication Date：2011-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 1-4 )