Some parameters that affect QuEChERS extraction were optimized (univariate analysis), such as the amount of sample (2.5, 5 and 10 g), the amount of water for sample dilution (8.5 and 10 mL), the type of extraction solvent (acetonitrile and acetonitrile: ethyl acetate, 70:30 v/v) and the type of clean-up sorbents (50 mg of PSA; 50 mg of Florisil; or 50 mg of PSA together with 50 mg of Florisil) with 150 mg of MgSO4 for 500 lL of extract. The extraction salts were maintained as follows: 4 g of MgSO4 and 1 g of sodium acetate. Fig. 1 shows the flow chart of the QuEChERS method adapted for the analysis of pesticides in honey.