一种色谱保留模型的改进及二茂铁衍生物保留值的预测

Improvement of the Retention Model in Reversed Phase-High Performance Liquid Chromatography and Prediction of the Retention of Ferrocene Derivatives

二茂铁衍生物在四氢呋喃－甲醇－水三元溶剂系统中的保留符合Ｋｏｗａｌｓｋａ所提出的 物理化学保留模型１。但由于模型１没有考虑到化学计量问题，故其结果不够精确。本文在模 型１中引入粘度系数（或介电常数）来定量表示化学计量关系，得到明显优于模型１的模型 ２。鉴于ＨＰＬＣ系统中常以ｌｏｇＫ’表示保留值，本文以ｌｏｇＫ’代替模型１、２中的Ｒｆ值，简化了 计算。

The retention values of ferrocene derivatives in THF-MeOH-H2O ternary solvent system were coinsided with the physico-chemical retention model 1 of Kowalska T. Howev- er, Model 1 does not consider the chemical stoichiometry and its conclusion is not so exact e- nough. Our work introduced viscosity coefficient (or dielectric constant) to express the quantitative chemical correlation, so we obtained Model 2 better than model l. Usually HPLC systems use logk' to stand for retention value. In this paper. logk' is used to stand for Rf values of Model 1 and 2 so as to simplify the calculation.