Roles of organic modifiers in micellar electrokinetic capillary chromatography
文献类型：期刊论文
| 作者 | Liu, Z; Zou, HF; Zhang, YK |
| 刊名 | hrc-journal of high resolution chromatography
 |
| 出版日期 | 1998-04-01 |
| 卷号 | 21期号:4页码:234-240 |
| 关键词 | micellar electrokinetic capillary chromatography electroosmotic migration electrophoretic migration of micelle retention mechanism |
| 英文摘要 | in the present work, four organic modifiers, pit. urea, dioxane, methanol, and tetrahydrofuran, were comparatively and systematically studied in terms of their effects on electrokinetic migration behavior and the retention mechanism of homologous solutes in mecc. the results showed that the electroosmotic mobility, mu(eo), and the electrophoretic mobility of a micelle, mu(cp,mc), decrease linearly with increasing organic modifier concentration. the ability of organic modifiers to lower mu(eo) is greater than their ability to lower mu(ep,mc). the negative values of the slopes of these linear relationships, d-eo and d-cp,d-mc, increase along the series the order urea < methanol < dioxane < tetrahydrofuran. the logarithm of the capacity factor (in k') of uncharged homologous solute, which is mainly determined by the hydrophobic interaction, decreases linearly with increasing organic modifier concentration, due not only to the decrease in the partition coefficient but also to the decrease in the phase ratio. a linear relationship was observed between the slope of the plot of ln k' vs. organic modifier concentration and the carbon number of homologous compound. the slope of such a relationship can characterize the hydrophobicity of the organic modifier. the hydrophobicity of such organic modifiers is also found to increase along the series urea < methanol < dioxane < tetrahydrofuran. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, analytical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | fluorine magnetic resonance ; zone electrophoresis ; separation ; solvents |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000073856400005 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138142]  |
| 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 | Acad Sinica, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Dalian 116011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Z,Zou, HF,Zhang, YK. Roles of organic modifiers in micellar electrokinetic capillary chromatography[J]. hrc-journal of high resolution chromatography,1998,21(4):234-240. |
| APA | Liu, Z,Zou, HF,&Zhang, YK.(1998).Roles of organic modifiers in micellar electrokinetic capillary chromatography.hrc-journal of high resolution chromatography,21(4),234-240. |
| MLA | Liu, Z,et al."Roles of organic modifiers in micellar electrokinetic capillary chromatography".hrc-journal of high resolution chromatography 21.4(1998):234-240. |
入库方式： OAI收割
来源：大连化学物理研究所
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