Selectivity in a liquid-solid chromatographic system |
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| Authors: | S M Petrovi? S Lomi? I ?efer |
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| Institution: | (1) Institute of Microbiological Processes and Applied Chemistry, Faculty of Technology, University of Novi Sad, 21000 Novi Sad, Yugoslavia |
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| Abstract: | Summary Utilizing experimentally determined capacity ratios and “a priori” calculated activity coefficients of the solutes the selectivity
of separation in a liquid-solid chromatographic system is studied. Both the experimentally determined selectivity factor (α) and the calculated selectivity factor in the mobile phase (α
m) of a solute pair fit a quadratic function of the concentration of eluting solvent components. Comparing these factors it
is shown that the selectivity in the stationary phase (α
s) is fairly constant when the composition of the mobile phase is changed. |
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| Keywords: | Column liquid-solid chromatography Selectivity Mobile phase Stationary phase |
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