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题名: Properties and applications of mixed packing capillary electrochromatography
作者: Zhang, LH;  Zhang, YK;  Shi, W;  Zou, HF
关键词: capillary electrochromatography ;  mixed packing technique ;  electroosmotic flow ;  retention mechanism ;  fast analysis
刊名: HRC-JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY
发表日期: 1999-12-01
卷: 22, 期:12, 页:666-670
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: Mixed packing capillary electrochromatography (MP CEC) with the stationary phase comprising a physical mixture of strong cation exchange (SCX) phase and octadecpilyl (ODS) phase was developed. With the existence of a sulfonic acid group on the surface of SCX, not only could the electroosmotic flow (EOF) remain high at low pH, but also the hydrophilicity of the stationary phase was increased greatly, leading to broad adaptable ranges of both pH and organic modifier concentration in the mobile phase. At the same time, with the coexistence of C-18 on the surface of ODS, both the retention and the resolution of samples vr ere improved. Accordingly, MP CEC combined the advantages of both SCS and ODS columns. Effects of operation parameters on EOF and the capacity factors of solutes as well as the retention mechanism of such a column were studied systematically. In addition, MP CEC columns were used in the analysis of strong polar solutes as well as for the high speed separation of acidic, basic, and neutral compounds in a single fun.
关键词[WOS]: LIQUID-CHROMATOGRAPHY ;  STATIONARY-PHASE ;  SEPARATION
语种: 英语
WOS记录号: WOS:000084494100003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138209
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:
Zhang, LH,Zhang, YK,Shi, W,et al. Properties and applications of mixed packing capillary electrochromatography[J]. HRC-JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY,1999,22(12):666-670.
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