Separation of polycyclic aromatic hydrocarbons by micellar electrokinetic chromatography with cyclodextrins as modifiers

Abstract

The use of α-, β- and γ-cyclodextrins as modifiers to the electrophoretic medium containing sodium dodecyl sulphate and a phosphate-borate buffer in the micellar electrokinetic chromatography of polycyclic aromatic hydrocarbons (PAHS) was investigated. The results showed that the migration behaviour of PAHs could be related to their sizes and the cavity sizes of the cyclodextrins. With the addition of γ-cyclodextrin higher selectivity could be achieved, which consequently resulted in better separation of the seven PAHs investigated. © 1992.