Abnormal phenomenon of the dependence of the retention factors for uncharged species on applied voltage in capillary electrochromatography

	Abnormal phenomenon of the dependence of the retention factors for uncharged species on applied voltage in capillary electrochromatography
	Ping, GC ; Zhang, WB ; Zhang, L ; Zhang, LH ; Schmitt-Kopplin, P ; Kettrup, A ; Zhang, YK
刊名	chromatographia
	2003-06-01
卷号	57 期号:11-12 页码:777-781
关键词	capillary electrochromatography polymer monolithic column applied voltage retention factor
产权排序	1;1
英文摘要	polymethacrylate-based monolithic columns were prepared for capillary electrochromatography (cec) by in situ copolymerization of butyl methacrylate (bma), 2-acrylamido-2-methyl-1-propanesulfonic acid (amps), and ethylene dimethacrylate (edma) in the presence of a porogen in fused-silica capillaries of 100 mum i.d. the abnormal phenomenon that retention factors for neutral species decreases with applied voltage in cec was observed. capillary electrophoresis (ce) instruments usually require a period of time to increase voltage from 0 kv to desired value, which is called as ramp time. such ramp time and any error in the determination of dead time should be taken into account during the accurate calculation of retention factors. after the correction of the retention factors, the plots of the corrected factors for alkylbenzene versus applied voltage were made, the absolute value of the plot slopes are less than 1.8 x 10(-4), which indicates that the corrected retention times for neutral species do not show any dependence on applied voltage. further, the plots of the corrected retention times for acidic and basic compounds versus the reciprocal of applied voltage were drawn, where the target compounds were eluted in neutral form. the very nice linearity of the plots was obtained. the linear correlation coefficients are over 0.999. here, the slopes of the plots represent
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
关键词[WOS]	performance liquid-chromatography ; rigid polymer monoliths ; separation media ; stationary phases ; homologous series ; continuous beds ; columns ; behavior ; members
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000183802500012
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/83433]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Acad Sinica, Dalian Inst Chem Phys, Natl Chromatog Res & Anal Ctr, Dalian 116011, Peoples R China 2.GSF, Natl Ctr Environm & Hlth, Inst Ecol Chem, D-85764 Neuherberg, Germany
推荐引用方式 GB/T 7714	Ping, GC,Zhang, WB,Zhang, L,et al. Abnormal phenomenon of the dependence of the retention factors for uncharged species on applied voltage in capillary electrochromatography[J]. chromatographia,2003,57(11-12):777-781.
APA	Ping, GC.,Zhang, WB.,Zhang, L.,Zhang, LH.,Schmitt-Kopplin, P.,...&Zhang, YK.(2003).Abnormal phenomenon of the dependence of the retention factors for uncharged species on applied voltage in capillary electrochromatography.chromatographia,57(11-12),777-781.
MLA	Ping, GC,et al."Abnormal phenomenon of the dependence of the retention factors for uncharged species on applied voltage in capillary electrochromatography".chromatographia 57.11-12(2003):777-781.