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Monolithic columns with mixed modes of reversed-phase and anion-exchange stationary phase for capillary electrochromatography
Fu, HJ; Xie, CH; Xiao, H; Dong, J; Hu, JW; Zou, HF
关键词Monolithic Columns Mixed-mode Separations Stationary Phases Electrochromatography Electrochromatography Anilines Alkylbenzenes Polynuclear Aromatic Hydrocarbons Caffeine Barbitals Benzoic Acids Terephthalic Acid
刊名JOURNAL OF CHROMATOGRAPHY A
2004-07-30
DOI10.1016/j.chroma.2004.04.076
1044期:1-2页:237-244
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]Biochemical Research Methods ; Chemistry, Analytical
研究领域[WOS]Biochemistry & Molecular Biology ; Chemistry
关键词[WOS]RIGID POLYMER MONOLITHS ; LIQUID-CHROMATOGRAPHY ; SEPARATION MEDIA ; PEPTIDES ; PROTEINS
英文摘要A capillary electrochromatography (CEC) monolithic column with mixed modes of reversed-phase and anion-exchange stationary phases was prepared by in situ polymerization of 2-(methacryloxy)ethyltrimethylammonium methyl sulfate (MEAMS) and ethylene dimethacrylate (EDMA) in a binary porogenic solvent consisting 1-propanol and 1,4-butanediol. The ammonium groups on the surface of the stationary phase generate an electroosmotic flow (EOF) from cathode to anode, and serve as a strong anion-exchange stationary phase at the same time. The EOF of the stationary phase can be determined by the amount of MEAMS monomer in reaction mixtures during the polymerization. The monolithic stationary phases exhibited reversed-phase chromatographic behavior toward neutral solutes. For charged solutes, hydrophobic as well as electrostatic interaction/repulsion with the monoliths was observed. Separations of aromatic compounds and basic compounds on the prepared column were performed under the mode of CEC. Peak tailing of basic compounds was avoided and the efficient separation of aromatic acids was achieved using neutral mobile phase due to the same direction of EOF and electrophorestic mobility of negatively charged solutes. (C) 2004 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000222984300019
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被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139579
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Dalian 116011, Peoples R China
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Fu, HJ,Xie, CH,Xiao, H,et al. Monolithic columns with mixed modes of reversed-phase and anion-exchange stationary phase for capillary electrochromatography[J]. JOURNAL OF CHROMATOGRAPHY A,2004,1044(1-2):237-244.
APA Fu, HJ,Xie, CH,Xiao, H,Dong, J,Hu, JW,&Zou, HF.(2004).Monolithic columns with mixed modes of reversed-phase and anion-exchange stationary phase for capillary electrochromatography.JOURNAL OF CHROMATOGRAPHY A,1044(1-2),237-244.
MLA Fu, HJ,et al."Monolithic columns with mixed modes of reversed-phase and anion-exchange stationary phase for capillary electrochromatography".JOURNAL OF CHROMATOGRAPHY A 1044.1-2(2004):237-244.
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