INCREASED SELECTIVITY FOR ELECTROCHROMATOGRAPHY BY DYNAMIC ION-EXCHANGE

被引：32

作者：

GARNER, TW

YEUNG, ES

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011

来源：

JOURNAL OF CHROMATOGRAPHY | 1993年 / 640卷 / 1-2期

关键词：

D O I：

10.1016/0021-9673(93)80208-P

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The separation of compounds with similar mobilities is expected to be difficult with capillary zone electrophoresis. Increased selectivity is shown for compounds of this type when other modes of separation are added to the system. A capillary coated with a hydrophobic stationary phase is shown to be a dynamic ion exchanger when a quaternary ammonium compound is added to the running buffer. Compounds are shown to have a decrease in retention when the concentration of the buffer ion is increased. The effect of adding an organic modifier and the influence of the concentration of the surface active reagent are also studied.

引用

页码：397 / 402

页数：6

共 21 条

[1] RETENTION OF SOME ORGANIC ELECTROLYTES IN ION-PAIR REVERSED-PHASE HIGH-PERFORMANCE LIQUID AND REVERSED-PHASE HIGH-PERFORMANCE THIN-LAYER CHROMATOGRAPHIC SYSTEMS [J].