CHROMATOGRAPHIC DETERMINATION OF TRACE AMOUNTS OF AMINES USING A SURFACE-IONIZATION DETECTOR

The results of comparative investigations showed the possibility of th e chromatographic detection of trace amounts of amines (primary, secon dary, tertiary and quaternary) in mixtures using a modified surface io nization detector. The potential (theoretical) characteristics of the surface ionization detector (ionization efficiency, sensitivity, detec tion limits, linear ranges, etc.) were calculated on the basis of an e xperimental study of the concentration dependences of the detector sig nal on the amount of substance under analysis (10(-4)-10(-9) g). The u nique sensitivity of the detector with respect to tertiary amines, 10( -14) g/s, is shown, in addition to the possibility of the selective re gistration and identification of quaternary ammonium salts.