Analysis of multi-pesticide residues in the foods of animal origin by GC-MS coupled with accelerated solvent extraction and gel permeation chromatography cleanup

► A method was developed to determine 109 pesticides in the foods of animal origin. ► The samples were extracted by ASE and purified by GPC automatically. ► The prepared samples were analyzed by GC-MS with SIM mode. ► The recoveries and RSD values are considered acceptable for residue analysis.