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题名: Monolithic column with zwitterionic stationary phase for capillary electrochromatography
作者: Fu, HJ;  Xie, CH;  Dong, J;  Huang, XD;  Zou, HF
刊名: ANALYTICAL CHEMISTRY
发表日期: 2004-08-15
DOI: 10.1021/ac0496695
卷: 76, 期:16, 页:4866-4874
收录类别: SCI
文章类型: Article
项目归属: 1809
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A capillary electrochromatography (CEC) monolithic column with zwitterionic stationary phases was prepared by in situ polymerization of butyl methacrylate, ethylene dimethacrylate, methacrylic acid, and 2-(dimethyl amino) ethyl methacrylate in the presence of porogens. The stationary phases have zwitterionic functional groups, that is, both tertiary amine and acrylic acid groups, so the ionization of those groups on the zwitterionic stationary phase was affected by the pH values of the mobile phase, and further affects the strength and direction of the electroosmotic flow (EOF). Separations of alkylbenzenes and polycylic aromatic hydrocarbons based on the hydrophobic mechanism were obtained. Separation of various types of polar compounds, including phenols, anilines, and peptides, on the prepared column were performed under CEC mode with anodic and cathodic EOF, and different separation selectivities of those polar analytes were observed on the monolithic capillary column by using mobile phases with different pH values.
关键词[WOS]: PERFORMANCE LIQUID-CHROMATOGRAPHY ;  RIGID POLYMER MONOLITHS ;  ELECTROSTATIC ION CHROMATOGRAPHY ;  ELECTROOSMOTIC FLOW ;  PACKED CAPILLARIES ;  POROUS PROPERTIES ;  SEPARATION MEDIA ;  PROTEINS ;  EFFICIENCY ;  PEPTIDES
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000223290300032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81993
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Dalian 116011, Peoples R China

Recommended Citation:
Fu, HJ,Xie, CH,Dong, J,et al. Monolithic column with zwitterionic stationary phase for capillary electrochromatography[J]. ANALYTICAL CHEMISTRY,2004,76(16):4866-4874.
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