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Electrical Potential Oscillation in an Anionic Surfactant System with Barbitone in Octanol as an Oil Phase

J. Gao*, L. Wang, W. Yang and F. Yang

Chemistry & Chemical Engineering College,
Northwest Normal University, Lanzhou 730070, P. R..China

Studies were made on oscillations across a liquid membrane consisting of an oil layer, octanol containing barbitone, between two aqueous layers: one containing 8 mM SDS with alcohol and the other containing 0.1 M NaCl. The effects of various concentrations of chemical components in this system on the patterns of electrical oscillation were examined. The oscillations may be explained by the mechanism of repetitive formation and destruction of monolayer structures of the dodecyl sulfate anion at the interface between the organic and the aqueous phases, with the effect of proton penetration. This study of potential oscillation across a membrane containing a drug provides the possibility of further investigations in pharmacological activity.

Keywords: Anionic surfactant, Barbitone, Electrical oscillation, Octanol