MULTIRESIDUE PESTICIDE ANALYSIS BY ION-TRAP MASS-SPECTROMETRY

The ion trap has been demonstrated to be able to detect and quantify 2 45 target pesticides extracted vis the Luke method while providing con current confirmation of presence via full scan data at the sub-ppm lev el. The precision and accuracy of the analytical approach was determin ed to be no greater than 15% relative standard deviation. A comparisio n study of over 100 incurred residues analyzed by the ion trap and gas chromatography with an array of element-selective detectors has indic ated that sample clean-up will probably be necessary before quantifica tion is acceptable for all target compounds. The data obtained using a combination of gas chromatography and mass spectrometry and presented for 250 target pesticides constitutes the basic information required to duplicate and extend the methodology.