铬天青S的液/液界面离子转移过程

本文研究了酸性染料显色剂铬天青S的液/液界面离子转移行为, 用循环伏安法和电流扫描计时电位法研究了铬天青S在水/硝基苯和水/1,2-二氯乙烷两种界面上的离子转移过程, 根据铬在青S在溶液中的离解平衡和电化学性质, 讨论了界面离子转移机理,研究了基础电解质和溶剂对铬天青S转移性能的影响, 在Britton-Robinson缓冲溶液中测得半波电位PH曲线与理论公式相一致, 由本法所得离解常数与文献值接近, 计算了转移离子的标准转移电位和标准吉布斯转移能。

Ion transfer of chromazurol S across the liquid-liquid interface

The ion transfer of Chromazural S (CAS) across the interface of W/NB and W/1,2-DCE was studied by cyclic voltammetry and chronopotentiometry with linear current scanning. The transfer mechanism of CAS was proposed in terms of its electrochem. behavior and equilibrium of dissociation The experimental data obtained for half-wave potential D0wf1/2 and pH in W phase are in agreement with the theor. equation based on the mechanism proposed. The standard potential differences D0wf0 and standard Gibbs energy of Chrom Azurol S across the interface were calculated