MULTIPLE DETECTOR RESPONSES FOR GAS-CHROMATOGRAPHY PEAK IDENTIFICATION

Four detectors have been employed in this study to assist in gas chrom atography peak identification along with the relative retention time. These four detectors are based upon different principles and their res ponses appear to be independent. The detectors are the classical flame ionization detector and three photoionization detectors using the pho ton emission from He, Ar, and Kr. Relative detector responses, includi ng an internal standard, have been used to eliminate concentration ter ms and account for long-term drifts in the electronic equipment. A tot al of 127 compounds, containing numerous functional groups, varying st ructures, and degrees of unsaturation, were included in the study. The relative detector responses, in conjunction with the relative retenti on time, gave a set of four values that were unique to each of the 127 compounds. (C) 1998 Elsevier Science B.V.