高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (S1): 45.

• 研究论文 • 上一篇    下一篇

用线性溶剂化能相关(LSERs)方法评价聚合物包覆钛胶固定相并与相关固定相比较

雷荣, 邢毓杰, 杨俊佼, 左育民   

  1. 南开大学化学系, 天津 300071
  • 收稿日期:2001-07-22 出版日期:2001-12-31 发布日期:2001-12-31
  • 通讯作者: 左育民(1937年出生),男,教授,博士生导师.主要从事色谱和有机结构分析研究.Tel:022-23502419.
  • 基金资助:

    国家自然科学基金(批准号:29575201)资助.

Evaluation of Polymer Encapsulated-TiO2 Stationary Phase and Comparison to Related Phases Using Linear Solvation Energy Relationships

LEI Rong, XING Yu-Jie, YANG Jun-Jiao, ZUO Yu-Min   

  1. Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2001-07-22 Online:2001-12-31 Published:2001-12-31

PDF (PC)

被引次数

2

摘要：

利用线性溶剂化能相关(LSERs)方法对聚(乙基苯乙烯-二乙烯基苯)包覆钛胶固定相(ES-DVB-TiO2)的保留行为进行评价,并与聚丁二烯涂覆钛胶固定相(PBD-TiO2),键合硅胶固定相(ODS)和树脂固定相(PR-1)作了比较,计算出各变最对logk'的百分方差数,发现V2、Σα2H,和Σβ2H对logk'有较大的贡献,与聚合物固定相PRP-1近似,因此它们有相似的保留机理,即吸附机理大于分配机理.

关键词: 聚(乙基苯乙烯-二乙烯基苯)包覆钛胶固定相(ES-DVB-TiO2), 线性溶剂化能相关(LSERs), 方差数, 保留机理

Abstract:

The retention behaviors of poly(ethylstyrene-divinylbenzene) encapsulated-TiO2 (ES-DVB-TiO2) were studied by means of linear solvation energy relationships (LSERs). On the ES-DVB-TiO2 stationary phase, 21 kinds of compounds were tested in mobile phase of methanol and water. Good relationships between log k' (ES-DVB-TiO2) and LSERs parameters are obtained. Besides, we compared the retention characteristics of ES-DVB-TiO2,PBD-TiO2,ODS and PRP-1. According to percent variance, retention on ES-DVB-TiO2 synthesized in our laboratory is dominated by three major factors:the solute size (V2)、hydrogen bond donor acidity(Σα2H)、and the solute hydrogen bond acceptor basicity (Σβ2H). The results suggest that ES-DVB-TiO2 stationary phase exhibits a more adsorption-like retention mechanism under room temperature.

Key words: ES-DVB-TiO2, LSERs, Percent variance, Retention mechanism

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