Premium
Polarography of Uranyl Complex with Chromotropic Acid
Author(s) -
Chen Shou Nan,
Gi Hung Jang,
Hung S Song
Publication year - 1990
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199000058
Subject(s) - chemistry , polarography , uranyl , chromotropic acid , diffusion , ion , analytical chemistry (journal) , inorganic chemistry , square wave , kinetic energy , electrode , reagent , thermodynamics , chromatography , organic chemistry , voltage , physics , quantum mechanics
The polarography characteristic of uranyl ion in chromotropic acid solution was investigated systematically over the pH range 2.0 to 10.0 with ligand concentrations varying from 0.010 M to 0.200 M. At pH 5.5, the one‐electron reversible reduction waves were obtained. The temperature coefficient of the half‐wave potential was obtained to be −0.32 mV per degree and the mean value of i d /h 1/2 is 0.340 ± 0.003. The electrode reaction is UO 2 (HA) 2 4− + c = UO 2 (HA) 2− + HA 3− Where pH 5.5, an irreversible and diffusion‐controlled wave was obtained. The diffusion coefficients and kinetic parameters of complex species were determined by deducing instantaneous equations.