Electrolytic investigations

Rapid electrolytic methods are proposed for the determination of selenium and tellurium, and for the separation of copper from selenium and tellurium. The determination of selenium and tellurium is accomplished by depositing the selenium and tellurium as copper selenide and copper telluride from nitric solutions containing the selenium and tellurium in the quadrivalent state. The separation of copper from selenium and tellurium is accomplished by electrolyzing the copper from a nitric acid solution after oxidation of the selenium and tellurium to the sexivalent state with permanganate.