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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
Source PublicationANALYTICAL CHEMISTRY
2000-02-01
Volume72Issue:3Pages:616-621
Indexed BySCI
SubtypeArticle
Department4
Funding Project403
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordRIGID POLYMER MONOLITHS ; LIQUID-CHROMATOGRAPHY ; ION-EXCHANGE ; ELECTROOSMOTIC FLOW ; PACKED CAPILLARIES ; STATIONARY PHASES ; SEPARATION MEDIA ; ELECTROPHORESIS ; SILICA
AbstractA 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.
Language英语
URL查看原文
WOS IDWOS:000085168200035
Citation statistics
Cited Times:43[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/84999
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Dalian 116011, Peoples R China
Recommended Citation
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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