The efficiency of counterion affinity towards ionic micelles is often described in terms of the degree of counterion binding (β _X ) to ionic micelles or the conventional ion-exchange constant (\(K_{X}^{\text{Br}}\)) or relative binding constant (\(R_{X}^{\text{Br}}\)) of X ⁻ and Br⁻ counterions. This review describes the use of ionized phenyl salicylate ions, PSa⁻, as a new probe to determine \(K_{X}^{\text{Br}}\) values using a semiempirical spectrophotometric method. The value of \(K_{X}^{\text{Br}}\) is found to be comparable to reported values obtained using different probes by the semiempirical kinetic method as well as different physical methods. Application of semiempirical methods for calculation of \(K_{X}^{\text{Br}}\) or \(R_{X}^{\text{Br}}\) values involves an inherent assumption that these values are independent of the physicochemical characteristics of the probe molecule.

抗衡离子的亲和力的朝向离子胶束的效率通常在结合的抗衡离子的程度的术语，描述（β _X）与离子胶束或传统的离子交换常数（\（K_ {X} ^ {\文本{溴}} \））或相对结合常数（\（R_ {X} ^ {\ {文本溴}} \）的）X ^-和Br ^-的抗衡离子。这篇综述描述了使用离子化的水杨酸苯酯离子，PSA的^- ，作为一个新的探针，以确定\（K_ {X} ^ {\ {文本溴}} \）使用半经验分光光度法值。的值\（K_ {X} ^ {\ {文本溴}} \） 发现与通过半经验动力学方法以及不同物理方法使用不同探针获得的报道值相当。应用半经验方法来计算\（K_ {X} ^ {\ text {Br}} \）或\（R_ {X} ^ {\ text {Br}} \）值涉及一个固有的假设，即这些值是独立的探针分子的理化特性