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题名: Capillary electrochromatography with a silica column with a dynamically modified cationic surfactant
作者: Ye, ML;  Zou, HF;  Liu, Z;  Ni, JY;  Zhang, YK
关键词: electrochromatography ;  dynamically modified silica capillary electrochromatography ;  stationary phases, LC ;  anilines ;  benzenes ;  peptides
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 1999-09-03
卷: 855, 期:1, 页:137-145
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
英文摘要: A novel mode of capillary electrochromatography (CEC), called dynamically modified silica-capillary electrochromatography, is described in this paper. The column packed with bare silica was dynamically modified with long chain quaternary ammonium salt, cetyltrimethylammonium bromide (CTAB), which was added into the mobile phase. CTAB ions were adsorbed onto the surface of bare silica, and the resulted hydrophobic layer on the silica gel was used as the stationary phase; Using the dynamically modified silica column, neutral solutes were separated by CEC. The highest number of theoretical plates obtained was about 71 500/m and the relative standard deviations for t(0) and capacity factor of toluene were 4.7% and 4.9% for 20 consecutive runs, respectively. The separation mechanism of neutral solutes and the influence of mobile phase composition on the separation was investigated. The separation of nitrogen-containing solutes was carried out with this mode and the peak tailing of basic solute was effectively eliminated because the adsorption of basic solute on silica was blocked by the preferred adsorption of CTAB. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词[WOS]: PERFORMANCE LIQUID-CHROMATOGRAPHY ;  STATIONARY PHASES ;  SEPARATION ;  BEHAVIOR ;  ELECTROPHORESIS ;  BASES
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000082604000008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/85601
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, Lab Chromatog, Dalian 116011, Peoples R China

Recommended Citation:
Ye, ML,Zou, HF,Liu, Z,et al. Capillary electrochromatography with a silica column with a dynamically modified cationic surfactant[J]. JOURNAL OF CHROMATOGRAPHY A,1999,855(1):137-145.
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