CONTINUAL ANALYSIS OF GAS CHROMATOGRAPHIC EFFLUENTS BY RAPID REPETITIVE INFRARED SCANNING

Rapid, on-the-fly, infrared analysis of gas chromatographic effluents was investigated using a grating spectrometer that continually produced infrared spectra from 2.7 to 9 μ at the rate of 1.6 spectra per second. The gas eluting from the gas chromatograph was passed continuously through a flow-through infrared cell where its spectrum was scanned repetitively by the spectrometer. The quality of the spectra obtained was adequate for functional group analyses of a number of organic compounds studied. Potential ability to detect unresolved GC peaks appeared to be a particularly valuable feature of this analytical method. © 1969, American Chemical Society. All rights reserved.