IDENTIFICATION OF PESTICIDES IN MIXTURES BY HIGH-RESOLUTION MASS SPECTROMETRY

By utilizing the information available from highresolution mass spectral data of pesticides, it has been possible to identify ions in the spectra of each pesticide whose elemental composition (accurate mass) is unique for that pesticide and can be used to identify the presence of the pesticide in the high-resolution mass spectrum of a pesticide mixture. A number of mixtures containing organophosphorus pesticides and chlorinated hydrocarbons were prepared and mass spectra obtained. All of the pesticide components of the mixtures were identified, using the mass spectral data obtained for the individual pesticides. © 1969, American Chemical Society. All rights reserved.