摘要
近年来,将离子型和非离子型混合表面活性剂应用于痕量、微量金属分析已有一些报道[1-5],但对显色反应的机理研究还不多.我们曾指出混合胶束的形成改变了反应微环境,是产生协同增敏作用的机理之一.
The distribution coefficients of PAR and effective dielectric constants of PAR microenvironment in mixed ionic-nonionic surfactant solutions were determined by ultrafiltration and ultraviolet-visible spectrophotometric method.The relationship between the data and synergic sensitizing effect of mixed ionic-nonionic surfactants on color reaction were deduced.It was indicated that the main causes of synergic sensitizing effect of mixed ionic-nonionic surfactants on color reaction were the synergic enrichment effect of the micelle and the unsymmetrical microenvironment effect on tho color complex.
出处
《化学学报》
SCIE
CAS
1988年第2期187-190,共4页
Acta Chimica Sinica
基金
中国科学院科学基金资助的课题
