MATRIX EFFECTS IN PESTICIDE MULTI-RESIDUE ANALYSIS BY LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY

摘要

Three sample preparation methods: Luke method (AOAC 985.22), QuEChERS (quick, easy, cheap, effective, rugged and safe) and matrix solid phase dispersion (MSPD) were applied to different fruits and vegetables for analysis of 14 pesticide residues by high-performance liquid chromatography with electrospray ionization mass spectrometry (HPLC/ESI/MS). Matrix effect, recovery and process efficiency of the sample preparation methods applied to different fruits and vegetables were compared. Differences of matrix effects between fruits and fruit varieties were investigated.