Revisionist look at solvophobic driving forces in reversed-phase liquid chromatography IV. Partitioning vs. adsorption mechanism on various types of polymeric bonded phases
Revisionist look at solvophobic driving forces in reversed-phase liquid chromatography IV. Partitioning vs. adsorption mechanism on various types of polymeric bonded phases
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修正主义者研究反相液相色谱中的疏溶剂驱动力 IV。
DOI：
10.1016/s0021-9673(97)00014-9
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发表时间：
1997
影响因子：
4.1
通讯作者：
P. Carr
中科院分区：
文献类型：
--
作者：
J. Park;Young Kyu Lee;Yeong Chun Weon;L. C. Tan;Jianwei Li;Li Li;J. F. Evans;P. Carr
基于亚甲基从有机水溶液中转移到正十六烷上的自由能，研究了反相液相色谱（RPLC）中保留的分配和吸附机理。在具有辛基链或更长链的单体键合相上的保留由分区样机制支配。类似吸附的机制有助于保留在具有短键合链或具有低表面覆盖密度的单体键合相中。随着键合链长度的减小，保留机制变得更像吸附。
The partitioning and adsorption mechanisms of retention in reversed-phase liquid chromatography (RPLC) were examined based on the free energy of transfer of a methylene group from organic aqueous mixtures to bulk hexadecane. Retention on monomeric bonded phases with octyl chains or longer are dominated by a partitioning-like mechanism. An adsorption-like mechanism contributes to retention in monomeric bonded phases with short bonded chains or with low surface coverage density. The retention mechanism becomes more adsorption-like as the length of the bonded chains decrease.