ABSTRACT
The development of gas-liquid-solid chromatography made it possible to use this method for investigation and quantitative estimation of the adsorption of volatile chromatographed compounds at the gas-stationary liquid phase (SLP) and SLP-solid support interfaces. This chapter presents two equations open up new possibilities for physicochemical measurements in partition kinds of chromatography. Using them, one can measure not only isotherms of partition (absorption) but also isotherms of adsorption of the chromatographed compounds at the interfaces. In gas-liquid-solid chromatography, this has been demonstrated for linear isotherms of adsorption at the gas-SLP interface and at the liquid phase-solid interface. Measurement of adsorption isotherms at the SLP-solid support interface is one of the most novel physicochemical applications of gas chromatography. Therefore, it seemed expedient to perform an additional verification of this method by independently determining the partition coefficient of the chromatographed substance within the liquid-solid system.
