用吸附伏安法测定十二烷基苯磺酸钠水溶液体系的临界胶束浓度

Determination of Critical Micelle Concentration of Aqueous Sodium Dodecyl Benzenesulfonate (SDBS) Solution by Absorption Voltammetry

以中性红(NR)为探针,根据表面活性剂的增溶作用,采用线性扫描吸附伏安法测定了十二烷基苯磺酸钠 (SDBS)的临界胶束浓度(CMC),并初步探讨了中性红在悬汞电极(HMDE)上的反应机理,测得电子转移数n为2, 电荷传递系数α为0．611．

Critical micelle concentration （CMC） of sodium dodecyl benzenesulfonate （SDBS） in aqueous solution has been determined by adsorption voltammetry using neutral red （NR） as a electroactive probe molecule. The mechanism of electrochemical reduction of NR at hanging mercury drop electrode （HMDE） has been explored, and also gives both the electron transfer number n and the charge transfer coefficients a as 2 and 0. 611, respectively.