Ion Trap Detection for Development of a Multiresidue/Multi Matrix Method for Pesticide Residues in Agricultural Products

In the Netherlands for the determination of more than 400 pesticides thirteen multi residue methods and about 170 single residue methods are in use. A literature search learns that about 200 pesticides are gaschromatography (GC) amenable, that quantitative extraction procedures exist and these pesticides also give good recovery when gelpermeation (GPC) is used for cleanup of extracts. A strategy is discussed to develop a universal multi pesticide method, especially paying attention to plant material, using a universal very sensitive detection system, e.g. the ion trap detector. Experimental data obtained with diverging matrices are presented together with some thoughts on on-line GPC-GC combinations, using a temperature programmable injector in the GC system.