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A rapid, specific and sensitive multi-residue method based on the quick, east, cheap, effective, rugged and safe (QuEChERS) has been developed and validated for the determination of 19 multi-class insecticide and fungicide residues (Aldrin, Amitraz, Bromopropylate, Chlorpyrifos, DDT, Diazinon, Dichlorovos, Ethion, Fenpropathrin, Fenvalerate, Iprodion, Malathion, Metalaxyl, Oxydemethon methyl, Permethrin, Phosalone, Pirimicarb, Profenofos and Tetradifon) in greenhouse cucumber and tomato. Gas chromatography-mass spectrometric detection in selected ion monitoring mode (GC/MS-SIM) was applied for determination of pesticides residues. Quantification was performed using matrix-matched calibration and solvent calibration. Recovery studies were used for comparison of accuracy of each calibration method. Results showed matrix matched calibration would be efficient for quantification of pesticide residues in Iranian cucumber and tomato.

journal of the chilean chemical society

VALIDATION OF MATRIX MATCHED CALIBRATION FOR ANALYSIS OF INSECTICIDE AND FUNGICID RESIDUES IN CUCUMBER AND TOMATO USING QuEChERS SAMPLE PREPARATION FOLLOWED BY GAS CHROMATOGRAPHY-MASS SPECTROMETRY