【摘要】 基于在乳化剂OP存在下的水溶液中赤藓红和曙红等酸性咕吨染料与阳离子表面活性剂(CS)的离子缔合反应,发展了一种分光光度测定阳离子表面活性剂的新方法.反应的适宜pH值为1.6—2.1(赤藓红体系)和1.4—1.8(曙红Y体系),离子缔合物的组成为(CS)(HR).显色反应有较高的灵敏度和良好的选择性,可用于水中阳离子表面活性剂的测定.更多还原

【Abstract】 A new spect ophotometric method for determination of cationic surfactants (CS ) was developed, on the based the ion-associating reactions of acidic xan-thene dye (H2R) such as erythrosin and eosin Y with cationic surfactans in aqueous solution in the presence of emulsifying agent op. The suitable pH are 1.6-2.1(erythrosin system ) and 1.4-1.8(eosin Y system), and the composition of the ion-associates are(CS) (HR). The colour reactions have higher sensitivities and selectivities and so it can be applied for determination of cationic surfactants in water samples.更多还原