Evaluation of peak areas in gas chromatogram using a new parameter

Abstract

In the gas chromatographic approaches for quantitative determination of the components under consideration, there have been various methods for evaluating peak areas of the chromatogram, namely, planimeter tracing, triangulation, half band width method, peak height × retention time method, gravimetry by cutting out the peak areas, and automatically operated electronic integrator. The authors introduced a new parameter involving a multiple of the peak height by the time required for the deflection of the recorder pen from base line to the peak point. The parameter exhibited a superior linearity with the actual peak areas to all other parameters mentioned above except the electronic integrator and the linearity reproduced in widely different patterns of the chromatograms. It has been also found that most of the peak patterns of the chromatogram were well traced by the distribution function proposed by Levenspiel's mixing-diffusion model while the Gaussian and Poisson distribution functions could be applied only for chromatograms with sharp peaks. A geometric interpretation has been carried out with the linear relationship between the new parameter and the peak areas. © 1971, The Japan Society for Analytical Chemistry. All rights reserved.