A Simple and Fast Method to Determine Competitive Isotherms- The Frontal Velocity Analysis Method

Abstract

Abstract: Asimple and fast method, the frontal velocity analysis method was used to determine the com-petitive isotherms for p-dihydroxy-benzene and resorcinol on ODS-silica with volume ratio 20: 80methanol-water as the mobile phase.The data obtained from it are fitted to competitive-Langmulrisotherms, and the best parameters are obtained.Meanwhile, a classic method, the rectangular pulsemethod was also used to determine the competitive isotherms for the same system under the same condi-tions.The results obtained show that the competitive isotherms obtained from the frontal velocity analysismethod and the rectangular pulse method are in well agreement.This shows that the simpler and easiermethod——the frontal velocity analysis can be used to determine competitive isotherms with the same ac-curacy as the classic method.

Key words: Competitive isotherms, Liquid chromatography, Frontal velocity analysis method, Rectangu-lar pulse method

CLC Number:

O658

TrendMD:

YANG Geng-Liang, SUN Su-Fang, LIU Hai-Yan, WANG De-Xian, CHEN Yi, SUN Han-Wen. A Simple and Fast Method to Determine Competitive Isotherms- The Frontal Velocity Analysis Method[J]. Chem. J. Chinese Universities, 2002, 23(4): 555.

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A Simple and Fast Method to Determine Competitive Isotherms- The Frontal Velocity Analysis Method

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