苯扎溴铵原名新洁尔灭属季铵盐类药物,是一种阳离子表面活性杀菌、消毒剂。我国药典采用萃取—容量滴定法测定,操作较麻烦,终点不易判明。近期英、美药典收载的为与苯扎溴铵有相似结构和性质的苯扎氯铵(benzalkonium chloride),他们采用碘酸钾滴定法测定含量,亦有操作麻烦、终点不易判明的问题。本文研制了能直接响应苯扎溴铵离 Benzalkonium bromide formerly known as benzalkonium chloride quaternary ammonium salts, is a cationic surfactant bactericidal, disinfectant. China Pharmacopoeia extraction - volumetric titration method, the operation is more cumbersome, the end is not easy to identify. Recently, the United Kingdom and the United States Pharmacopoeia contained benzalkonium chloride with similar structure and properties to benzalkonium bromide. They used the potassium iodate titration method to determine the content, and the operation was cumbersome and the end point was not easily identified. This paper developed a direct response to benzalkonium bromide