The CMC of SDS was studied using conductivity method. The effects of temperature,pH value,concentration of metal ions(Cd2+,Zn2+,Pb2+),and mixed nonionic surfactant(Brij35,TritonX-100,APG) on CMC value of the solution were considered.

• 用电导法对十二烷基硫酸钠(SDS)的临界胶团浓度(CMC)进行了研究,考虑了温度、pH值、金属离子(Cd2+、Zn2+、Pb2+)浓度变化以及SDS和3种非离子表面活性剂(Brij35、TritonX-100、APG)的复配对溶液CMC值的影响。