1996 Volume 12 Issue 3 Pages 381-384
A general, functional relationship between the retention volume of the 2nd system peak and the chromatographic parameters (the acid dissociation constant of the eluent component, the eluent concentration, the acid/salt ratio in the eluent, the acid-partition coefficient) in ion chromatography with monobasic acid eluent systems (acids, salts, and their mixtures) have been derived. The relations precisely reproduced the results by computer simulation based on the plate theory, and were confirmed with independent experiments. By using these relations, the partition isotherm of eluent acids to the stationary phase can be obtained easily.
