The development of an online amperometric technique to measure free and WAD cyanide in gold plant leach liquors and effluent streams

Includes synopsis.Includes bibliographical references.In 2004, Mintek recognised the gold mining industry‘s need for an online free and WAD cyanide measurement device and went about extending the existing free cyanide analyser,the Cynoprobe to include WAD cyanide measurement. The WAD cyanide analysis technique was to be based on ligand exchange, which required the selection of an appropriate reagent,with amperometric finish. Thereafter, the technique was validated in the laboratory to include the capabilities of the prototype instrument in terms of accuracy and precision (0.5-100 ppm WAD CN). Various local trials were conducted in order to validate the measurement and the robustness of the instrument in an industrial environment. Successful trials (