The enantiomeric separation of atropisomeric polychlorinated biphenyls Ε½ was studied by cyclodextrin-modified micellar electrokinetic chromatography CD-. MEKC . Four CD derivatives were investigated as chiral selectors, and 2-hydroxyl-β₯-CD gave the best resolution for the separation of PCB 84. Three
Cyclodextrin-modified micellar electrokinetic chromatography for separation of norgestrel enantiomers
β Scribed by Liu, Yu ;Gu, Junling ;Fu, Ruonong
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 487 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0935-6304
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β¦ Synopsis
Abstract
A simple method for the separation of highly hydrophobic neutral enantiomers by cyclodextrinβmodified micellar electrokinetic chroβmatography (MEKC) is presented and strongly supported by experiments. The separation depends on the ratio between the concentrations of cyclodextrin (CD) and sodium dodecylsulfate (SDS) micelles and there is an optimum value of the ratio for the separation of the enantiomers of norgestrel and 4βandrosteneβ3,17βdione. At the optimum value of the ratio, obtained by adjusting the absolute concentrations of CD and SDS. The electrophoretic mobility difference between two enantiomers can be maintained nearly constant.
π SIMILAR VOLUMES
A micellar electrokinetic capillary chromatographic method for the separation of tetrahydroberberine alkaloids was established. An electrolyte solution of 0.02 M sodium dodecyl sulphate (SDS) in 0.03 M borate buffer (pH 9) containing 10% acetonitrile, and an applied voltage of 20 kV, were found to b