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气相色谱固定液极性和选择性评价
引用本文:王文领,张祥民.气相色谱固定液极性和选择性评价[J].高等学校化学学报,1997,18(11):1762-1768.
作者姓名:王文领  张祥民
作者单位:复旦大学化学系!上海,200433
摘    要:对非同族化合物溶质在两种固定相上保留值的关系进行了理论推导,并将该方程应用于89种常见固定相的极性和选择性的评价。固定相的极性可用B值来评价,而选择性则用B、T3^a,C3β值来评价。用该方程评价固定相具有两个优点,一是基于分子间作用力来评价固定相;二是探针化合物的选择不再受限制。

关 键 词:固定相  极性  选择性  气相色谱  固定液

Characterization of Solvent Polarity and Selectivity of Gas Chromatographic Liquid Phases
WANG Wen-Ling, ZHANG Xiang-Min, LU Pei-Zhang, DENG Jia-Qi.Characterization of Solvent Polarity and Selectivity of Gas Chromatographic Liquid Phases[J].Chemical Research In Chinese Universities,1997,18(11):1762-1768.
Authors:WANG Wen-Ling  ZHANG Xiang-Min  LU Pei-Zhang  DENG Jia-Qi
Abstract:An equation, I=AI' BN+C1 , was derivied to correlate the Kovats retention indices for solutes on different stationary phases. In thisequation, A is determined by the interaction energy of a methylene group on two stationaryphases. B is mainly determined by the relative intermolecular interaction energy of the carbonchain of a compound On two stationary phases. C1 is mainly determined by the dispersiveinteraction difference of the functional group(s) of a compound on two phases. C2 isdetermined by the difference of the dipole moment interaction energy of a compound on twophases are determined by the differences of the relative hydrogen-bonding acceptor basicityor donor acidity of two phases. Therefore, we recommended B to describe the polarity of astationary phases, the coefficient to describe the selectivity of a stationary phase.These coefficients for 89 stationary phases were presented in present paper.
Keywords:Stationary phase  Polarity  Selectivity  Gas chromatography
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