Codony R, Prat M D, Beltrán J L
Departament de Química Analítica, Universitat de Barcelona, Avinguda Diagonal 647, 08028 Barcelona, Spain.
Talanta. 2000 Jun 21;52(2):225-32. doi: 10.1016/s0039-9140(00)00318-0.
The complexation equilibria for Zn(II)-8-quinolinol and Zn(II)-5,7-dichloro-2-methyl-8-quinolinol systems were studied spectrophotometrically in aqueous micellar solutions of the non-ionic surfactant Brij-35 in NaCl 0.1 M medium at 25 degrees C. The partition model, in which the different species involved in the equilibria can distribute themselves between aqueous and micellar pseudophases, was applied. Calculations were performed by means of the spdis program, developed specifically to handle multiwavelength spectrophotometric data in micellar systems. A factor analysis was applied to the spectrophotometric data in order to determine the number of species in equilibrium. A quantitative relationship was found between fluorescence intensity and the micellar solubilization of metal chelates.
在25℃下，于0.1 M NaCl介质中，在非离子表面活性剂Brij - 35的水胶束溶液中，用分光光度法研究了Zn(II)-8-喹啉醇和Zn(II)-5,7-二氯-2-甲基-8-喹啉醇体系的络合平衡。应用了分配模型，其中平衡中涉及的不同物种可在水相和胶束假相之间进行分配。计算通过专门开发用于处理胶束体系中多波长分光光度数据的spdis程序进行。对分光光度数据进行因子分析以确定平衡中物种的数量。发现了荧光强度与金属螯合物的胶束增溶之间的定量关系。
