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题名: Separation of neutral compounds by high speed capillary electrochromatography
作者: Zhang, LH;  Shi, W;  Zou, HF;  Ni, JY;  Zhang, YK
刊名: JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
发表日期: 1999
卷: 22, 期:18, 页:2715-2728
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: With using short capillary column packed with porous and non-porous ODS stationary phases, high speed separation of 6 neutral aromatic compounds within 36 s by capillary electrochromatography (CEC) has been performed. Good reproducibility of the migration times for those solutes in high speed CEC was observed with RSD less than 1%. Both the linear velocity of EOF and the current linearly increases with the applied voltage, which means that the thermal effect by Joule heating was small. However, the capacity factor of solutes was found to decrease with the increase of the applied voltage, which was caused by the fact that about several seconds needed for the increase of voltage from 0 to applied value on a commercial CE instrument made larger contributions to the migration times of the early eluted compounds than those of lately eluted ones during high speed CEC, and voltage effect would increase with the higher applied voltage used. The linear relationship between the logarithm of capacity factor and the number of carbon for homologous compounds was observed, and positive value of slope means that the hydrophobicity of solutes is one of the main contribution factors to retention in high speed CEC packed with ODS stationary phases.
关键词[WOS]: LIQUID-CHROMATOGRAPHY ;  PACKED CAPILLARIES ;  ELECTROPHORESIS ;  PHASE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000083353700001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/85635
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,Shi, W,Zou, HF,et al. Separation of neutral compounds by high speed capillary electrochromatography[J]. JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES,1999,22(18):2715-2728.
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