Pseudo Peak Phenomena in Micellar Electrokinetic Capillary Chromatography by Using Ionic Surfactant

Chemical Research in Chinese Universities ›› 2003, Vol. 19 ›› Issue (2): 151-154.

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Pseudo Peak Phenomena in Micellar Electrokinetic Capillary Chromatography by Using Ionic Surfactant

CHEN Guan-hua^1,2, YANG Geng-liang^1,3, TIAN Yi-ling², CHEN Yi³

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

Received:2002-08-15 Online:2003-04-24 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China(No.20075005) and the Natural Science Foundation of Hebei Province, China(No.200077, 202096).

Abstract

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.

Key words: Pseudo peak, Interaction, Ionic surfactant, Micellar electrokinetic capillary chromatography

CHEN Guan-hua, YANG Geng-liang, TIAN Yi-ling, CHEN Yi. Pseudo Peak Phenomena in Micellar Electrokinetic Capillary Chromatography by Using Ionic Surfactant[J]. Chemical Research in Chinese Universities, 2003, 19(2): 151-154.

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Pseudo Peak Phenomena in Micellar Electrokinetic Capillary Chromatography by Using Ionic Surfactant

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