ION-TRAP DETECTION FOR DEVELOPMENT OF A MULTI RESIDUE MULTI MATRIX-METHOD FOR PESTICIDE-RESIDUES IN AGRICULTURAL PRODUCTS

In the Netherlands for the determination of more than 400 pesticides t hirteen multi residue methods and about 170 single residue methods are in use. A literature search learns that about 200 pesticides are gasc hromatography (GC) amenable, that quantitative extraction procedures e xist and these pesticides also give good recovery when gelpermeation ( GPC) is used for cleanup of extracts. A strategy is discussed to devel op 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 mat rices are presented together with some thoughts on on-line GPC-GC comb inations, using a temperature programmable injector in the GC system.