Approaching over 10 000-fold sensitivity increase in chiral capillary electrophoresis: Cation-selective exhaustive injection and sweeping cyclodextrin-modified micellar electrokinetic chromatography

2016 ◽  
Vol 37 (22) ◽  
pp. 2970-2976 ◽  
Author(s):  
Toshiyasu Mikuma ◽  
Yuko T. Iwata ◽  
Hajime Miyaguchi ◽  
Kenji Kuwayama ◽  
Kenji Tsujikawa ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Micellar Electrokinetic Chromatography ◽  
Electrokinetic Chromatography ◽  
Chiral Capillary Electrophoresis ◽  
Sensitivity Increase

Analysis of macromolecular branched chain polypeptides by capillary electrophoresis and micellar electrokinetic chromatography

1996 ◽  
Vol 17 (8) ◽  
pp. 1357-1360 ◽  
Author(s):  
Miklós Idei ◽  
Gábor Dibó ◽  
Katalin Bogdán ◽  
Gábor Mezö ◽  
Anikó Horváth ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Micellar Electrokinetic Chromatography ◽  
Electrokinetic Chromatography ◽  
Branched Chain

scholarly journals Enantiomeric and Isomeric Separation of Pesticides by Cyclodextrin-Modified Micellar Electrokinetic Chromatography

1999 ◽  
Vol 82 (6) ◽  
pp. 1550-1561 ◽  
Author(s):  
Damian Shea ◽  
Kumar V Penmetsa ◽  
Ross B Leidy
Keyword(s):  
Capillary Electrophoresis ◽  
Water Samples ◽  
Micellar Electrokinetic Chromatography ◽  
Detection Limits ◽  
Sodium Cholate ◽  
Electrokinetic Chromatography ◽  
Buffer Analysis

Abstract Cyclodextrin-modified micellar electrokinetic chromatography was applied successfully to the enantiomeric and isomeric separation of 7 commonly used pesticides (propiconazole, bioallethrin, fenpropathrin, phenothrin, bitertanol, triadimenol, and dimethomorph). Commercially available surfactants used alone or in combination with cyclodextrins were evaluated for separation of the enantiomers/isomers of the 7 pesticides. The enan-tiomers/isomers of the pesticides used in this study were baseline resolved with resolutions of ≥1.5. The resolution was found to depend on the type of surfactant and cyclodextrin employed in the running buffer. In the case of propiconazole and dimethomorph, baseline resolution was also achieved by adding sodium cholate (a chiral surfactant) alone to the running buffer. Analysis of fortified water samples yielded recoveries ranging from 45 to 89% and method detection limits ranging from 0.18 to 2.1 ppb. The reported capillary electrophoresis methods are simple, rapid, and reproducible.

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