Abstract:

The liquid membrane oscillation between two immiscible phases can be applied to simulate the electron transfer process in biomembrane, therefore the molecular recognition based on unique potential oscillation can be applied to chemical analysis. In this work, a liquid membrane oscillation system of water cetyltrimethyl ammonium bromide(CTAB)/n-propanol)/oil(nitromethane solution of picric acid)/water(glucose solution) was established. The influence of alkyl homologues on the liquid membrane oscillation system was studied with the presence of n-hexane, n-octane, n-decane, n-dodecane, n-tetradecane, n-hexadecane, cyclohexane or iso-octane, etc. The results indicate that the amplitude and frequency of the liquid membrane oscillation curve are closely related to the added alkanes. Therefore, it is possible to differentiate alkanes using the liquid membrane oscillation system.

Key words: liquid membrane oscillations, surfactants, alkyl homologue, recognition, CTAB