吸附伏安法测定阳离子表面活性剂的临界胶束浓度

Determination of critical micelle concentration of cationic surfactant by adsorption voltammetry

以中性红为探针，用吸附伏安法测定了溴化十六烷基三甲铵的临界胶束浓度。

A new method was developed to determine the critical micelle concentration of cetyltrimethyl ammonium bromide (CTAB) by adsorption voltammetry using neutral red as a probeThe basic principle of the method is that trace neutral red in surfactant solution can be adsorbed by a hanging mercury electrode,and the adsorptive voltammetric peak current has a turning point when micelles are formed because neutral red is far more soluble in micelles than in waterThe turning point is the critical micelle concentration of the surfactant