Constant current anodic stripping chronopotentiometric determination of uranium in uranium mineral ores via accumulation of K2UO2[Fe(CN)(6)] on the palladium plated aluminum electrode

In the present work the uranyl hexacyanoferrate (K2UO2[Fe(CN)(6)]) is deposited on the palladized aluminum (Pd-Al) electrode from a UO22+ + Fe(CN)(6)(-3) solution. Then the anodic stripping chronopotentiometry (ASCP) was used to strip the K2UO2[Fe(CN)(6)] from the Pd-Al surface. The operational conditions including: pH, K3Fe(CN)(6) concentration, deposition potential, deposition time and stripping current were optimized. The ASCP calibration graph was linear in concentration range 10-460 mu M. of UO22+ and the detection limit was 8.5 mu M. The interference of some concomitant ions during the deposition process of K2UO2[Fe(CN)(6)] was studied. The proposed method was successfully applied for analysis of some uranium mineral ores.