2000 Volume 48 Issue 6 Pages 873-875
The separation of nine furanonaphthoquinones by micellar electrokinetic chromatography (MEKC) is described. The running electrolytes used in this method were 0.03M sodium dodecyl sulphate (SDS) in 0.09M borate buffer (pH 9) containing 10% methanol, with an applied voltage of 20kV. Application of this technique in the determination of the main furanonaphthoquinones, 5-hydroxy-2-(1-hydroxyethyl)naphtho[2, 3-b]furan-4, 9-dione, 8-hydroxy-2-(1-hydroxyethyl)naphtho[2, 3-b]furan-4, 9-dione, and 2-(1-hydroxyethyl)naphtho[2, 3-b]furan-4, 9-dione, of Tabebuia impetiginosa is demonstrated in this paper.
