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Exact electric field strength over the packed capillary electrochromatography column bed, theoretical considerations and practical determination
Guo, W; Yang, CH; Xu, BJ
关键词Capillary Electrochromatography Packed Column Bed Electric Field Strength Resistance Of Cec Column Resistivity Of The Mobile Phase
刊名JOURNAL OF CHROMATOGRAPHY A
2004-12-03
DOI10.1016/j.chroma.2004.10.035
1059期:1-2页:175-180
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Biochemical Research Methods ; Chemistry, Analytical
研究领域[WOS]Biochemistry & Molecular Biology ; Chemistry
关键词[WOS]ELECTROOSMOTIC FLOW ; PACKING ; CONDUCTIVITY ; CHROMATOGRAPHY ; PRESSURE
英文摘要

On the basis of the experiments, it was proved that Ohm′s law holds true in a capillary electrochromatography (CEC) column. By using the additivity of the potential drop over the packed and unpacked sections, the exact values of the electric field strength over the packed CEC column bed were determined experimentally. The ratio of the resistance of packed CEC column sections to that of an open capillary of the same length (R-p/R-o.Lp) were calculated. Some theoretical calculations were made to show how some structural parameters of particle lattice affect the resulting R-p/R-o.Lp value of the column bed formed accordingly. It is suggested that to correctly elucidate the EOF phenomenon in a CEC column, the potential drop over the packed and unpacked column sections, E-p and E-o, should be accounted for respectively, rather than using the average field strength over the total column length. (C) 2004 Elsevier B.V. All rights reserved.

语种英语
WOS记录号WOS:000225412200022
引用统计
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/57925
专题北京大学药学院
作者单位1.Hunan Normal Univ, Sch Med, Hunan 410006, Peoples R China
2.Peking Univ, Sch Pharmaceut Sci, Dept Analyt Chem, Beijing 100083, Peoples R China
3.Capital Univ Med Sci, Sch Pharmaceut Sci & Chem Biol, Beijing 100054, Peoples R China
推荐引用方式
GB/T 7714
Guo, W,Yang, CH,Xu, BJ. Exact electric field strength over the packed capillary electrochromatography column bed, theoretical considerations and practical determination[J]. JOURNAL OF CHROMATOGRAPHY A,2004,1059(1-2):175-180.
APA Guo, W,Yang, CH,&Xu, BJ.(2004).Exact electric field strength over the packed capillary electrochromatography column bed, theoretical considerations and practical determination.JOURNAL OF CHROMATOGRAPHY A,1059(1-2),175-180.
MLA Guo, W,et al."Exact electric field strength over the packed capillary electrochromatography column bed, theoretical considerations and practical determination".JOURNAL OF CHROMATOGRAPHY A 1059.1-2(2004):175-180.
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