Molecular theory of chromatographic selectivity enhancement for blocklike solutes in anisotropic stationary phases and its application
Molecular theory of chromatographic selectivity enhancement for blocklike solutes in anisotropic stationary phases and its application
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各向异性固定相中块状溶质色谱选择性增强的分子理论及其应用
DOI：
10.1021/ac00035a010
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
D. Martire
中科院分区：
文献类型：
--
作者：
Chao;D. Martire
一个方程，基于格子流体模型和适用于气体，液体和超临界流体色谱，推导出描述的选择性增强（SE）的结构异构体可比的货车德瓦尔斯体积时，各向同性固定相被替换为各向异性（取向有序）的。该方程的形式为（SE）=A min c 1 +A sur c 2 -c 4，其中A min和A sur分别是溶质异构体的（定标）最小横截面积和总表面积，系数c 1、c 2和c 4取决于溶剂几何参数、溶质-溶剂相互作用能和状态变量。
An equation, based on a lattice-fluid model and applicable to gas, liquid, and supercritical fluid chromatographies, is derived to describe the selectivity enhancement (SE) experienced by structural isomers of comparable van der Waals volume, when an isotropic stationary phase is replaced by an anisotropic (orientationally ordered) one. The equation has the form in (SE)=A min c 1 +A sur c 2 -c 4 , where A min and A sur are, respectively, the (scaled) minimum cross-sectional area and total surface area of the solute isomer, and the coefficients, c 1 , c 2 and c 4 depend on solvent geometric parameters, solute-solvent interaction energies, and state variables.