Correlation chromatograms from a triple-detector system

An electron-capture detector, two channels of a reactive-flow detector, and a flame-ionization detector mode were physically combined to investigate whether correlation (subtraction and conditional-access) chromatograms could be obtained from detectors that operated on entirely different principles and used separate, sequentially arranged monitoring chambers. The investigation was carried out with gasoline as a typical complex test sample. It showed that correlation chromatography, performed on different combinations of the three detectors, worked just as well as it had earlier on a solitary flame photometric detector. Relevant characteristics of correlational multi-detector systems are discussed in that context.