Chemical Analysis Methods for Uranium Ores - Part 3: Determination of Redox Potential - Potassium Dichromate Oxidation-Potentiometric Difference Method

This technical specification establishes a standardized procedure for determining the redox potential in uranium ore samples. The method utilizes a titration approach based on the oxidation reaction between potassium dichromate and the uranium compounds present in the specimen. By measuring the potential difference between a reference electrode and an indicator electrode, the analytical results provide precise data regarding the oxidation-reduction state of the ore. This protocol defines the necessary reagents, calibration standards, and equipment requirements to ensure consistency across different laboratories. The process involves sample preparation, followed by the controlled addition of the oxidizing agent while monitoring the electrical potential. The defined endpoint allows for the calculation of the potential value, which is critical for evaluating the ore's chemical characteristics and processing requirements. Adherence to the outlined steps ensures data reliability and comparability in mineral exploration and extraction activities.