稀土元素-铬天菁S-邻菲啰啉-两性表面活性剂多元络合物形成反应的研究

两性表面活性剂应用于分析化学,仅是初步尝试。本文就“稀土元素-铬天菁S-邻菲锣啉-DDMAA”多元络合物的形成反应机理进行了研究。物理化学分析表明,Y、o-phen、CAS、DDMAA生成了有确定组成的四元络合物。从络合物吸光度随DDMAA胶束浓度的依赖性看出,当其浓度逐渐增加至CMC时,体系的吸光度激增并达到稳定的最大值。考察DDMAA在纸上电泳实验中的行为,表明其是以正电荷阳离子状态参与络合反应的。并推测了络合物的可能结构。

SPECTROPHOTOMETRIC STUDY ON THE REACTION OFRARE EARTHS-O-PHENANTHROLINE-CHROMAZUROLS-AMPHOTERIC ACTIVE AGENT SYSTEM

The mechanism of reaction between rare earths (RE) and Chromazurol S (CAS) ,o-phenanthroline (o-phen.) in the presence of amphoteric active agent (DDMAA) has been studied spectrophotometrically.The results show that the maximum absorption is obtained at the point at which the concentration of DDMAA reached the CMC. Thus, it can be seen that the formation of micelles appears to have an important effect on complex reaction. The amphoteric active agent is in the form of cationic species which was proved by examining the electronic nature of DDMAAand the complex.The molar ratio of the four components in the complex is estimated to be Y:o-phen:CAS:DDMAA = 1:l:2:4 and the possible structure of the complex is proposed.