On-line concentration of neutral and charged species in capillary electrochromatography with a methacrylate-based monolithic stationary phase
文献类型：期刊论文
| 作者 | Ping, GC; Zhang, YK; Zhang, WB; Zhang, L; Zhang, LH; Schmitt-Kopplin, P; Kettrup, A |
| 刊名 | electrophoresis
 |
| 出版日期 | 2004-02-01 |
| 卷号 | 25期号:3页码:421-427 |
| 关键词 | capillary electrochromatography field-amplified sample stacking monolithic stationary phase on-line concentration on-column enrichment |
| 产权排序 | 1;1 |
| 英文摘要 | a method involving self-concentration, on-column enrichment and field-amplified sample stacking for on-line concentration in capillary electrochromatography with a polymer monolithic column is presented. since monolithic columns eliminate the frit fabrication and the problems associated with frits, the experimental conditions could be more flexibly adjusted to obtain higher concentration factor in comparison with conventional particulate packed columns. with self-concentration effect, the detection sensitivity of benzene and hexylbenzene is improved by a factor of 4 and 8, respectively. with on-column enrichment and ultralong injection, improvement as high as 22 000 times in detection sensitivity of benzoin is achieved. furthermore, a combination of the three above-mentioned methods yields up to a 24000-fold improvement in detection sensitivity for caffeine, a charged compound. parameters affecting the efficiency of on-line concentration are investigated systematically. in addition, equations describing on-line concentration process are deduced. |
| 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] | rigid polymer monoliths ; separation media ; liquid-chromatography ; preconcentration ; electrophoresis ; uv |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000188996900005 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/81649]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatograph Res & Anal Ctr, Dalian 116011, Peoples R China 2.GSF Natl Ctr Environm & Hlth, Inst Ecol Chem, Neuherberg, Germany 3.Tech Univ Munich, Lehrstuhl Okol Chem & Unweltanalyt, Inst Chem, D-8050 Freising Weihenstephan, Weihenstephan, Germany |
| 推荐引用方式 GB/T 7714 | Ping, GC,Zhang, YK,Zhang, WB,et al. On-line concentration of neutral and charged species in capillary electrochromatography with a methacrylate-based monolithic stationary phase[J]. electrophoresis,2004,25(3):421-427. |
| APA | Ping, GC.,Zhang, YK.,Zhang, WB.,Zhang, L.,Zhang, LH.,...&Kettrup, A.(2004).On-line concentration of neutral and charged species in capillary electrochromatography with a methacrylate-based monolithic stationary phase.electrophoresis,25(3),421-427. |
| MLA | Ping, GC,et al."On-line concentration of neutral and charged species in capillary electrochromatography with a methacrylate-based monolithic stationary phase".electrophoresis 25.3(2004):421-427. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。