土壤淋溶柱色谱中同系物、氯代苯保留值与流动相组成、沸点的交点规律

Intersection Point Rule for the Retention Value with Mobile Phase Composition and Boiling Point of the Homologues and Chlorobenzenes in Soil Leaching Column Chromatography

基于土壤淋溶柱色谱符合logk'-ψ的线性保留方程，在同系物（正构烷基苯、甲基苯）和氯代苯中，同类溶质与固定相（土壤）和淋洗剂（甲醇-水）有相似的作用方式，所以溶质保留值（logk'）与淋洗剂有机调节剂浓度间存在浓度交点，与沸点间存在沸点交点规律，并用实验进行了验证。

Based on the linear retention equation of the logarithm of the capacity factor (logk') vs. the methanol volume fraction ( ) of aqueous binary mobile phase in soil leaching column chromatography, the intersection point rule for the logk' of homologues and weak polar chlorobenzenes, with , as well as with boiling point, has been derived due to existence of the similar interactions among solutes of the same series,stationary phase (soil) and eluent (methanol-water). These rules were testified by experimental data of homologues (n -alkylbenzenes, methylbenzenes) and weak polar chlorobensenes.