铀-棓酸丙酯配合物的溶出伏安行为

STRIPPING VOLTAMMETRIC BEHAVIOUR OF URANIUM (Ⅵ)—PROPYL GALLATE COMPLEX

用线性电位扫描伏安法对铀(Ⅵ)-棓酸丙酯配合物的溶出伏安行为进行了研究,指出其体系的伏安行为具有配位性、吸附性和电极反应的不可逆性,测定了12个重要的物理化学参数,初步推导了整个电极反应的历程。

A study of the stripping voltammetry behaviour of theuranium(Ⅵ)-propyl gallate complex is made systematically.on thesurface of HMDE, the ads orption of the complex obeys Frumkinadsortion isotherm.The adsorption coefficient, the attractvie factor,adsorption free energy and maximum amount of adsorption have beendetermined.The electrochemical reductive reaction of the adsorption complexon HMDE is a irreversible surface process.The number of the transferredelectrons in the rate determinins step, transfer coefficient,rate cons-tant of electrode reaction and the condition constant of complex formationet al have been determined.The mechanism of complex formation andelectrochemical reaction have been discussed simply.