Abstract
The uranyl ion in mandelic acid solution has been investigated by polarography. The chelate species formed was found to be UO2A+ at pH<3.8. The diffusion coefficient of chelate decreases with increasing pH value and the square root of the ionic strength. When pH>5.8, an irreversible and diffusion-controlled wave was obtained due to the hydroxylation of the chelate species. The kinetic parameters of the electrode reduction were found to be that Ks is in the order of 10-4 cm/sec and α is 0.32±0.01.
