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题名: Separation of selected humic degradation compounds by capillary electrochromatography with monolithic and packed columns
作者: Ping, G;  Schmitt-Kopplin, P;  Hertkorn, N;  Zhang, WB;  Zhang, YK;  Kettrup, A
关键词: capillary electrochromatography ;  correlation spectroscopy ;  heteronuclear single quantum coherence ;  humic substance ;  lignin degradation products ;  monolithic column ;  nulear magnetic resonance ;  reversed-phase
刊名: ELECTROPHORESIS
发表日期: 2003-03-01
卷: 24, 期:6, 页:958-969
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: The separation of selected lignin/humic substance (HS) degradation compounds by capillary electrochromatography (CEC) with a methacrylate-based monolithic column and a conventional column packed with 5 gm octadecyl silica (ODS) particles is presented. The effects of organic modifier concentration, pH of the mobile phase, ionic strength, applied voltage, and temperature on the separation were investigated to determine the optimal separation conditions. With. the increase of pH in the mobile phase, some of analytes start to ionize and both chromatographic partition and electrophoresis can play roles in separation simultaneously. Accordingly, different selectivity from high-performance liquid chromatography (HPLC) and capillary electrophoresis (CE) could be achieved. The performances of both kinds of columns were compared. The results showed that the peaks of compounds obtained on the former column were much wider than those on the latter one, although good separation efficiency of alkylbenzenes could be readily achieved; the most probable reasons for this behavior and method to solve this problem were briefly discussed. The CEC of a soil fulvic acid with a monolithic column produced partly resolved broad bands; by means of nuclear magnetic resonance (NMR) analysis a wide range of oxygen derived aromatic substitution patterns was found with prominent contributions from phenolic and carboxylic groups.
关键词[WOS]: PHASE LIQUID-CHROMATOGRAPHY ;  RIGID POLYMER MONOLITHS ;  ORGANIC-MATTER ;  PHENOLIC ALDEHYDES ;  CONTINUOUS BEDS ;  PERFORMANCE ;  SUBSTANCES ;  MEDIA ;  SEDIMENTS ;  ROD
语种: 英语
WOS记录号: WOS:000182125200005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138309
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.GSF, Inst Ecol Chem, Natl Ctr Environm & Hlth, D-85764 Neuherberg, Germany
2.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog Res & Anal Ctr, Dalian, Peoples R China
3.Tech Univ Munich, Lehrstuhl Okol Chem & Umweltanalyt, Inst Chem, D-8050 Freising Weihenstephan, Germany

Recommended Citation:
Ping, G,Schmitt-Kopplin, P,Hertkorn, N,et al. Separation of selected humic degradation compounds by capillary electrochromatography with monolithic and packed columns[J]. ELECTROPHORESIS,2003,24(6):958-969.
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