The adsorption model for an accurate prediction of the analyte retention in the normal - phase liquid chromatography with a binary mobile phase has been proposed. This model was derived using a thermodynamically consistent modified competitive Langmuir isotherm. The performance of the proposed equation was compared with two retention models reported in literature. All models were verified for different NP-LC systems by use of three criteria: the sum of squared differences between the experimental and theoretical data, approximation of the standard deviation and the Fisher test.
A semi-empirical heterogeneous adsorption model for the accurate prediction of analyte retention in a column chromatography with binary mobile phase on polar bonded adsorbent surface was proposed. The performance of the proposed equation was compared with two retention models reported in the literature. All models were verified for different LC systems by means of four criteria: the sum of squared differences between the experimental and theoretical data, approximation of standard deviation, Fisher test and F-test ratio.
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