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Pseudo Peak Phenomena in Micellar Electrokinetic Capillary Chromatography by Using Ionic Surfactant |
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| Authors: | CHEN Guan-hua YANG Geng-liang TIAN Yi-ling CHEN Yi |
| Affiliation: | 1. College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P. R. China; 2. College of Life Science, Hebei Agricultural University, Baoding 071001, P. R. China;3. Molecular Science Center, Institute of Chemistry, Chinese Academy of Science, Beijing 100080, P. R. China |
| Abstract: | The origin of pseudo peak was studied by means of micellar electrokinetic capillary chromatography with cetyltrimethylaminium bromide as the pseudo stationary phase. It has been pointed that two peaks may appear for one component under certain conditions. Experiments showed that the relative areas of the two peaks of analyte depended on the time and the temperature of reaction between analyte and surfactant, and the concentration of surfactant in the sample solution. It means that the interaction between the analyte and the surfactant is a slow process, and a stable substance can be produced from the interaction. It is the substance and the analyte that may lead to the formation of two peaks. The fast interaction mechanism between the solute and the micellar should be queried from the experiment result. |
| Keywords: | Pseudo peak Interaction Ionic surfactant Micellar electrokinetic capillary chromatography |
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