烷烃同系物对液膜振荡的影响

基于表面活性物质在互不相溶的油水两相间自发迁移引起油水界面电位的周期性变化的液膜振荡可用于模拟生物膜振荡，并根据生物膜对某些分子具有的独特电位振荡作为识别分子的信号，可用于化学分析。 建立了水（十六烷基三甲基溴化铵（CTAB）/正丙醇 水溶液）/油（苦味酸硝基甲烷溶液）/水（葡萄糖水溶液）液膜振荡体系。 通过向体系中添加正己烷、正辛烷、正癸烷、正十二烷、正十四烷、正十六烷、环己烷和异辛烷等物质，考察了不同碳数的烷烃同系物、烷烃同分异构体以及混合烷烃对振荡的影响。 结果表明，加入不同类型的烷烃，振荡曲线的诱导期和振荡区的振幅和频率呈现一定规律性变化，以此可进一步进行液膜振荡在烷烃同系物识别与分析中的应用研究。

Effects of Alkyl Homologues on Liquid Membrane Oscillation

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.