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本文叙述了用微分吸附计时电势法测定表面活性剂的临界胶束浓度（CMC）。以十二烷基苯磺酸钠为例，以2-（5＇-溴-2＇-吡啶偶氮）-5-二乙氨基苯酚作为溶剂，选择适宜实验条件。进行了测定试验。表明了试验结果与理论相符。
This article describes the determination of the critical micelle concentration (CMC) of surfactant by differential adsorption chronopotentiometry. Taking sodium dodecyl benzene sulfonate as an example and 2- (5’-bromo-2’-pyridylazo) -5-diethylaminophenol as solvent, the suitable experimental conditions were selected. The measurement test was carried out. It shows that the experimental results are in accordance with the theory.