阴离子表面活性剂离子选择电极分析十二烷基苯磺酸钠/烷基糖苷混合体系

Quantitative analysis of sodium dodecyl sulfonate/alkyl polyglucoside mixture solution with anionic surfactant ion-selective electrode

利用自制阴离子表面活性剂离子选择电极,用电位滴定法测定了非离子表面活性剂烷基糖苷(APG)与阴离子表面活性剂十二烷基苯磺酸钠(SDBS)混合溶液中SDBS的浓度.结果表明:当混合溶液中n(APG)∶n(SDBS)小于2∶1时,可用此方法直接测定混合体系中的SDBS浓度,与滴定单一的SDBS溶液结果对照,滴定终点消耗海明标准溶液体积的相对误差在1.0%以内.

The concentration of sodium dodecyl benzene sulfonate（SDBS） in the mixed nonionic surfactant alkyl polyglucoside（APG） and anionic surfactant SDBS solution was determined by potentiometic titration with self-made anionic surfactant ion-selective electrode.The results indicated that when n（APG）∶n（SDBS） was less than 2∶1,the concentration of SDBS in the mixed solution could be directly determined by potentiometic titration.The relative error of titration endpoint consuming Hamming standard solution volume was less than 1.0% compared with the result obtained from a single SDBS solution.