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近年来,测定水中的微量阴离子表面活性剂的方法逐渐为环境监测所重视。常用的方法是采用亚甲兰—氯仿萃取光度法,此法虽具有较低的检测下限,但操作麻烦,且有毒性。用碘离子选择电极为指示电极,以碘离子为指示离子,测定微量阴离子表面活性剂虽已有人研究,但未见详细报导。本文研究了用碘离子为指示离子,十四烷基苄基二甲基氯化铵(Zeph),十二烷基苄基二甲基氯化铵(新洁尔灭)阳离子表面活性剂对十二烷
In recent years, the method of determination of trace anionic surfactants in water has gradually been emphasized by environmental monitoring. Commonly used method is to use methylene blue - chloroform extraction spectrophotometry, although this method has a lower detection limit, but the operation is cumbersome and toxic. With iodide ion selective electrode as the indicator electrode, iodide ion as the indicator ion, the determination of trace anionic surfactant has been studied, but no detailed report. In this paper, Iodine ions as the indicator ions, tetradecylbenzyldimethylammonium chloride (Zeph), dodecylbenzyldimethylammonium chloride (benzalkonium bromide) cationic surfactant on the dodecane