Premium
Investigation of quantitative relationship between adsorbed amount of solute and solvent concentration at relatively high solute concentration by frontal analysis in RPLC
Author(s) -
Wang Yan,
Geng XinDu,
Zebolsky Don M.
Publication year - 2003
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20030211021
Subject(s) - chemistry , adsorption , solvent , chromatography , environmental chemistry , inorganic chemistry , organic chemistry
In previous paper a new adsorption isotherm which relates the amount of solute absorbed to the solvent concentration is proposed and simplified, and it only can be used at lower solute concentration. In this article the scope of the new adsorption isotherm is extended and the expressions with three and four parameters are obtained. The equations with multi‐parameters are valid when the adsorbed amounts are larger and show nonlinear logarithmic relationships. Tests with a homologue of aromatic alcohols by frontal analysis in reversed phase liquid chromatography demonstrate that the experimental results fit those equations well. In addition, the predicted values by the multiparameters were found to fit the experimental values well also. The parameters have physical meaning only for the two‐parameter equation for the aromatic alcohols.