Investigation of Quantitative Relationship between Adsorbed Amount of Solute and Solvent Concentration at Relatively High Solute Concentration by Frontal Analysis in RPLC

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2003,（10）
• 页码范围: 1339-1343
• 页数: 5页
• 语种: 英文

摘要

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.