Analysis of Pesticide Residues in Spinach using Phenomenex roQ™ QuEChERS AOAC Kits by LC/MS/MS and GC/MS

In this application note, the AOAC official method 2007.01 for pesticide residues in foods is described for the analysis of 18 peptides and 2 internal standards from spinach using a Phenomenex roQ QuEChERS extraction kit and a PSA/GCB dSPE kit for sample preparation. Analysis was performed by LC/MS/MS and GC/MS. The roQ PSA/GCB dSPE kit was able to quickly remove pigment and other matrix interferences from the difficult spinach sample. Recoveries of all 18 pesticides were between 70% and 120% with sample-to-sample variation of <15%. Such results demonstrate the effectiveness of the roQ QuEChERS product for food analysis.