Concentrés de sulfure de cuivre — Dosage du cuivre — Méthode électrogravimétrique. The principle of the method specified is decomposing a test portion in nitric and sulfuric acids, separating copper from interfering elements (silver, arsenic, antimony, selenium, tin, iron, bismuth, and tellurium), determining traces of copper in the electrolyte, the filtrate, all precipitates and ...
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