FIRST RESULTS IN TRACE IDENTIFICATION OF ALLELOCHEMICALS AND PHEROMONES BY COMBINING GAS-CHROMATOGRAPHY MASS-SPECTROMETRY AND DIRECT DEPOSITION GAS-CHROMATOGRAPHY FOURIER-TRANSFORM INFRARED SPECTROMETRY

The advantages of a combining GC-MS and direct deposition GC-Fourier transform IR spectrometry at the same level of sensitivity are demonstrated using an apolar capillary column. This technique was applied to allelochemicals and pheromones present in minute concentrations. The identification of Allium volatiles and of the leek-moth male pheromones is described.