反相高效液相色谱中同系物的熵收敛

从热力学角度研究了同系物的碳数收敛现象。根据计量置换保留模型，推出了熵变收敛点方程，讨论了熵收敛的物理意义。根据Ｚ值的两个分量ｉ和ｓ，将总熵变分成端基及侧链的熵变和重复单元的熵变两个分量。最后，通过实验验证了熵变收敛点的坐标方程。

A studies on entropy convergence of homologues in reverse phase liquid chromatography

From thermodynamic point of view,standpoint, the convergent phenomenon of homologues was studied in reverse phasl liznid chromatoglaphy. According to stoichionmetric displacement model for retention(SDMR),an equation to evaluate the ordinates of the convergent point with entropy change was theoretically derived. The physical meaning of entropy eonvergence was also discussed. Based on two fractions of Z, i and s,the total entropy change was divided into two fractions, the total entropy changes of branched and end groups and that of total repeated structural unit. Finally the derived e(luation to calculate the coordinate of entropy convergence were tested by experiment with several mobile phases.