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题名: Octyl-functionalized hybrid silica monolithic column for reversed-phase capillary electrochromatography
作者: Yan, LJ;  Zhang, QH;  Feng, YQ;  Zhang, WB;  Li, T;  Zhang, LH;  Zhang, YK
关键词: monolithic stationary phases ;  reversed-phase capillary electrochromatography ;  organic-inorganic hybrid materials ;  sol-gel chemistry
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2006-07-14
DOI: 10.1016/j.chroma.2006.04.053
卷: 1121, 期:1, 页:92-98
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: Hybrid silica monolithic stationary phase functionalized with octyl groups was synthesized by a two-step acid/base-catalyzed hydrolysis/co-condensation of tetraethoxysilane (TEOS) and n-octyltriethoxysilane (C-8-TEOS). The influences of deter-mining factors in the sol-gel process such as the monomer ratio and water content on the monolith formation were systematically investigated. An increase in the TEOS/C-8-TEOS ratio in the polymerization mixture shifted the pore size distribution towards smaller pore diameter with larger pore volume. The optimal TEOS/C8-TEOS volume ratio was found to be 90/50, under which condition the median pore diameter of the monolith was around 1.0 mu m with pore volume of 3.25 cm(3)/g. The chromatographic characteristics of the monolithic column prepared with the optimized fabrication condition were studied. Some aromatic compounds including alkylbenzenes, polycyclic aromatic hydrocarbons (PAHs) and phenols were successfully separated on the octyl-functionalized silica monolithic column with high column efficiency up to 180,000 plates/m. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: PERFORMANCE LIQUID-CHROMATOGRAPHY ;  STATIONARY PHASES ;  POLYMER MONOLITHS ;  ONE-STEP ;  SEPARATION
语种: 英语
WOS记录号: WOS:000238776200012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140055
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.Natl Res Ctr Certified Reference Mat, Natl Inst Metrol, Beijing 100013, Peoples R China
2.Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog Res & Anal Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Yan, LJ,Zhang, QH,Feng, YQ,et al. Octyl-functionalized hybrid silica monolithic column for reversed-phase capillary electrochromatography[J]. JOURNAL OF CHROMATOGRAPHY A,2006,1121(1):92-98.
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