高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 555.

• 研究论文 • 上一篇    下一篇

一种简单快速测定竞争性等温线的新方法——前流速度分析法

杨更亮1,2, 孙素芳1, 刘海燕1, 王德先1, 陈义2, 孙汉文1   

  1. 1. 河北大学化学与环境科学学院, 保定 071002;
    2. 中国科学院化学研究所分子科学中心, 北京 100080
  • 收稿日期:2001-03-19 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 杨更亮(1963年出生),男,教授,博士生导师,从事色谱及相关技术理论和应用研究.E-mail:Ygl@mail.hbu.edu.cn E-mail:Ygl@mail.hbu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20075005);河北省自然科学基金(批准号;200077);中国科学院高访基金资助.

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

YANG Geng-Liang1,2, SUN Su-Fang1, LIU Hai-Yan1, WANG De-Xian1, CHEN Yi2, SUN Han-Wen1   

  1. 1. Institute of Analytical Science, Northwest University, Xi'an 710069, China;
    2. Section of Chemistry, Changzhi Medical College, Changzhi 046000, China
  • Received:2001-03-19 Online:2002-04-24 Published:2002-04-24

摘要: 以间二酚和对苯二酚二元体系为例,以甲醇-水(体积比20:80)为流动相,采用前流速度分析法测定了该体系在C18-硅胶固定相上的竞争性等温线。在相同实验条件下与传统的矩型脉冲法对该体系测定结果进行比较,结果表明,该法不仅能够准确测定二组分竞争性等温线,而且具有简单、快速等优点。

关键词: 竞争性等温线, 液相色谱, 前流速度分析法, 矩型脉冲法

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

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