色谱 ›› 2015, Vol. 33 ›› Issue (9): 929-933.DOI: 10.3724/SP.J.1123.2015.05011

• 亲水作用色谱专栏 • 上一篇    下一篇

糖类化合物在两性离子亲水作用色谱柱上的保留行为评价

姜舸, 沈爱金, 郭志谋, 李秀玲, 梁鑫淼   

  1. 中国科学院大连化学物理研究所, 中国科学院分离分析化学重点实验室, 辽宁 大连 116023
  • 收稿日期:2015-05-11 出版日期:2015-09-08 发布日期:2015-09-09
  • 通讯作者: 李秀玲
  • 基金资助:

    国家自然科学基金项目(21475129).

Evaluation of retention behavior of carbohydrate compounds on the zwitterionic hydrophilic interaction liquid chromatographic column

JIANG Ge, SHEN Aijin, GUO Zhimou, LI Xiuling, LIANG Xinmiao   

  1. Dalian Institute of Chemistry and Physics, Key Laboratory of Separation Science for Analytical Chemistry, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2015-05-11 Online:2015-09-08 Published:2015-09-09

摘要:

糖类化合物因其极性强,在反相色谱模式下保留较弱,因此常用亲水作用色谱(HILIC)对其进行分离分析。本文以9种糖类化合物的混合物为研究对象,系统评价了其在Click TE-Cys亲水色谱柱上的保留行为,分别考察了流动相中有机相比例和盐浓度对其保留行为的影响。实验证明:9种糖类化合物按极性由小到大的顺序依次从Click TE-Cys色谱柱上被洗脱下来。随着有机相比例的增加,糖类化合物的保留增强;随着盐浓度的增加,除唾液酸外的糖类化合物的保留增强。用顶替-吸附液相相互作用模型模拟了糖类化合物在HILIC上的保留行为,采用保留方程ln k=a+blnCB+cCB描述HILIC的保留规律,对HILIC的保留值进行多元线性回归。结果表明糖类化合物在Click TE-Cys色谱柱上的保留行为符合HILIC的保留规律。

关键词: Click TE-Cys色谱柱, 保留行为, 两性离子固定相, 亲水作用色谱, 糖类化合物

Abstract:

Because of the strong polarity of carbohydrate compounds which have weak retention in reverse-phase liquid chromatography (RPLC), hydrophilic interaction liquid chromatography (HILIC) is suitable for the separation and analysis of the carbohydrate compounds. In this study, nine carbohydrate compounds were selected as the test probes to systematically evaluate the retention behavior of the carbohydrate compounds on a Click TE-Cys column with zwitterionic stationary phase. And the effects of the ratio of organic phase and salt concentration in mobile phase on the retention behavior were investigated as well. The experiments proved that the nine carbohydrate compounds could be eluted in the order of their polarities from the Click TE-Cys column. With the increase of organic phase ratio, the retention of carbohydrate compounds was enhanced. As the increase of salt concentration, the retention of the carbohydrate compounds increased except sialic acid. Using displacement-adsorption liquid phase interaction model to simulate the retention behavior of the carbohydrate compounds under HILIC, the retention behavior of HILIC was described by the retention equation of ln k=a+bln CB+cCB, and the retention values of HILIC were analyzed by multiple linear regression. The results demonstrated that the retention behavior of carbohydrate compounds on the Click TE-Cys was in accordance with the retention regularity of HILIC.

Key words: Click TE-Cys column, hydrophilic interaction liquid chromatography (HILIC), oligosaccharide compounds, retention behavior, zwitterionic stationary phase

中图分类号: