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Capillary electrochromatography using a strong cation-exchange column with a dynamically modified cationic surfactant
Ye, ML; Zou, HF; Liu, Z; Ni, JY; Zhang, YK
刊名ANALYTICAL CHEMISTRY
2000-02-01
72期:3页:616-621
收录类别SCI
文章类型Article
部门归属4
项目归属403
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Analytical
研究领域[WOS]Chemistry
关键词[WOS]RIGID POLYMER MONOLITHS ; LIQUID-CHROMATOGRAPHY ; ION-EXCHANGE ; ELECTROOSMOTIC FLOW ; PACKED CAPILLARIES ; STATIONARY PHASES ; SEPARATION MEDIA ; ELECTROPHORESIS ; SILICA
英文摘要A novel mode of capillary electrochromatography (CEC), called dynamically modified strong cation-exchange CEC (DMSCX-CEC), is described in this paper. A column packed with a strong cation-exchange (SCX) packing material was dynamically modified with a long-chain quaternary ammonium salt, cetyltrimethylammonium bromide (CTAB), which was added to the mobile phase. CTAB ions were adsorbed onto the surface of the SCX packing material, and the resulting hydrophobic layer on this packing was used as the stationary phase. Using the dynamically modified SCX column, neutral solutes were separated with the CEC mode. The highest number of theoretical plates obtained was about 190 000/m, and the relative standard deviations (RSD's) for migration times and capacity factors of alkylbenzenes were less than 1.0% and 2.0% for five consecutive runs, respectively. The effects of CTAB and methanol concentrations and the pH value of the mobile phase on the electroosmotic flow and the separation mechanism were investigated. Excellent simultaneous separation of the basic and neutral solutes in DMSCX-CEC with a high-pH mobile phase was obtained, A mixture containing the acidic, basic, and neutral compounds was well separated in this mode with a low-pH mobile phase; however, peak tailing for basic compounds was observed in this mobile phase.
语种英语
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WOS记录号WOS:000085168200035
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被引频次:43[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/321008/84999
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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GB/T 7714
Ye, ML,Zou, HF,Liu, Z,et al. Capillary electrochromatography using a strong cation-exchange column with a dynamically modified cationic surfactant[J]. ANALYTICAL CHEMISTRY,2000,72(3):616-621.
APA Ye, ML,Zou, HF,Liu, Z,Ni, JY,&Zhang, YK.(2000).Capillary electrochromatography using a strong cation-exchange column with a dynamically modified cationic surfactant.ANALYTICAL CHEMISTRY,72(3),616-621.
MLA Ye, ML,et al."Capillary electrochromatography using a strong cation-exchange column with a dynamically modified cationic surfactant".ANALYTICAL CHEMISTRY 72.3(2000):616-621.
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