高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (10): 1556.

• 论文 • 上一篇    下一篇

液相色谱梯度淋洗过程中溶剂的分布规律

李瑞江, 张维冰, 倪坚毅, 邹汉法, 张玉奎   

  1. 中国科学院大连化学物理研究所, 国家色谱研究分析中心, 大连, 116011
  • 收稿日期:1997-12-12 出版日期:1998-10-24 发布日期:1998-10-24
  • 通讯作者: 邹汉法
  • 作者简介:李瑞江,男,28岁,博士研究生.

The Gradient Distribution of Mobile Phase in HPLC

LI Rui-Jiang, ZHANG Wei-Bing, NI Jian-Yi, ZOU Han-Fa, ZHANG Yu-Kui   

  1. National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116011
  • Received:1997-12-12 Online:1998-10-24 Published:1998-10-24

摘要: 在液相色谱梯度淋洗过程中,由于柱外过程和流动相在柱内的输运过程中的延迟作用和扩散的影响,使得溶剂浓度梯度变化时,在柱内特定位置的浓度随时间的变化符合相应的分布规律.本文从理论和实验两个方面对这一规律加以探讨,并讨论了仪器条件对该分布规律的影响.

关键词: 液相色谱, 梯度淋洗, 分布规律

Abstract: In the gradient elution of HPLC, the delay and dispersion of mobile phase during the transmission of mobile phase in column, and the out column effect result in that, there is a gradient distribution in the variation of mobile phase content with time at any location in column, and it obeys a distribution law. In this paper, the law is discussed theoretically and experimentally, and the effect on the law of instrumental condition and different solvents is also discussed.

Key words: HPLC, Gradient elution, Distribution law

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