Effects of organic modifiers on retention mechanism and selectivity in micellar electrokinetic capillary chromatography studied by linear solvation energy relationships
文献类型：期刊论文
| 作者 | Liu, Z; Zou, HF; Ye, ML; Ni, JY; Zhang, YK |
| 刊名 | journal of chromatography a
 |
| 出版日期 | 1999-11-19 |
| 卷号 | 863期号:1页码:69-79 |
| 关键词 | organic modifiers selectivity retention mechanisms micellar electrokinetic chromatography linear solvation energy relationships buffer composition |
| 英文摘要 | the effects of six organic modifiers (urea, methanol, dioxane, tetrahydrofuran, acetonitrile and 2-propanol) on the retention mechanism and separation selectivity of the bulk buffer in micellar electrokinetic capillary chromatography (mecc) with sodium dodecyl sulfate (sds) micelles as pseudo-stationary phase have been investigated through linear solvation energy relationships (lsers). it is found that the retention value in mecc systems with or without organic modifier is primarily dependent on the solvophobic interaction and the hydrogen bonding interaction with the solute as proton acceptor, while the dipolar interaction and the hydrogen bonding interaction with the solute as proton donor play minor roles. the effects of the organic modifiers on the solvophobic, dipolar and hydrogen bonding interactions are evaluated in terms of the relationship between regression coefficient of the lser equations and the modifier concentration. the variations of the solvophobic interaction and the dipolar interaction with change of the modifier concentration can be approximately explained using the solubility parameter and the dipolarity/polarizability parameter of the organic modifier, respectively. however, the relationships between the hydrogen bond acidity and basicity of the bulk buffer and the organic modifiers are rather complicated. those results may be caused from the displacement of organic modifiers to the water adsorbed on the micellar surface as well as changes in the acidity and basicity of the bulk buffer with the addition of organic modifiers. in addition, it is found that the phase ratio is influenced significantly by the use of organic modifier. (c) 1999 elsevier science bn. all rights reserved. |
| 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] | phase liquid-chromatography ; solvatochromic comparison method ; water partition-coefficients ; solute-solvent interactions ; mobile-phase ; stationary-phase ; pseudostationary phases ; parameters ; equation ; performance |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000083841900007 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138566]  |
| 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 | Chinese Acad Sci, Dalian Inst Chem Phys, Lab Chromatog, Natl Chromatog R&A Ctr, Dalian 116011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Z,Zou, HF,Ye, ML,et al. Effects of organic modifiers on retention mechanism and selectivity in micellar electrokinetic capillary chromatography studied by linear solvation energy relationships[J]. journal of chromatography a,1999,863(1):69-79. |
| APA | Liu, Z,Zou, HF,Ye, ML,Ni, JY,&Zhang, YK.(1999).Effects of organic modifiers on retention mechanism and selectivity in micellar electrokinetic capillary chromatography studied by linear solvation energy relationships.journal of chromatography a,863(1),69-79. |
| MLA | Liu, Z,et al."Effects of organic modifiers on retention mechanism and selectivity in micellar electrokinetic capillary chromatography studied by linear solvation energy relationships".journal of chromatography a 863.1(1999):69-79. |
入库方式： OAI收割
来源：大连化学物理研究所
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