Beltrán J L, Codony R, Granados M, Izquierdo A, Prat M D
Departament de Química Analítica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain.
Talanta. 1993 Feb;40(2):157-65. doi: 10.1016/0039-9140(93)80316-j.
The acid-base equilibria of 5,7-dichloro-2-methyl-8-hydroxyquinoline (HQ) have been examined spectrophotometrically in aqueous micellar solution of the non-ionic surfactant Brij-35. The differences between apparent pK(a) values at different surfactant concentrations can be quantitatively explained in terms of the extraction constants of the neutral species HQ and the ion-pair Na(+)Q(-). Calculations have been performed by means of SPDIS program, developed in this work to handle multiwavelength spectrophotometric data in micellar systems.
已通过分光光度法在非离子表面活性剂Brij-35的水性胶束溶液中研究了5,7-二氯-2-甲基-8-羟基喹啉（HQ）的酸碱平衡。不同表面活性剂浓度下表观pK(a)值的差异可以根据中性物质HQ和离子对Na(+)Q(-)的萃取常数进行定量解释。计算是通过SPDIS程序进行的，该程序是在本研究中开发的，用于处理胶束体系中的多波长分光光度数据。
