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题名: Self-enrichment effect of neutral solute in CEC
作者: Zhang, WB;  Zhu, J;  Zhang, YK
关键词: CEC ;  self-enrichment ;  injecting time ;  relaxation theory
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2001-09-01
卷: 22, 期:9, 页:1477-1480
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: During the injection of neutral solute in CEC, the partition equilibrium of solute between mobile phase and stationary phase will lead to an inhomogeneous distribution along column axes and bring on a self-enrichment effect. Based on the relaxation theory, the transfer process of solute in column is dolt with by no-dimension method. The transfer equation forms an increasing series by degree. This equation is also solved with production function, and the second central moment of the profile is derived. Compared to the common injecting process and self-enrichment, the expression which describes the effect of injecting time and retention value on enrichment is theoretically held and experimentally investigated with two drugs mephenytoin and benzoin. The results show that the longer the injecting time and the larger the capacity factor of solute, the stronger the self-enrichment effect. Under the conditions of constant column efficiency, the self-enrichment effect can increase more than 10-fold detection sensitivity to the experimental solute.
关键词[WOS]: CAPILLARY ELECTROCHROMATOGRAPHY
语种: 英语
WOS记录号: WOS:000172215200010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138918
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.Acad Sinica, Dalian Inst Chem Phys, Natl Chromatog Res & Anal Ctr, Dalian 116011, Peoples R China

Recommended Citation:
Zhang, WB,Zhu, J,Zhang, YK. Self-enrichment effect of neutral solute in CEC[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2001,22(9):1477-1480.
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