Determination of Copper Cyanide Plating Solutions and Cadmium in Cadmium Cyanide Plating Solutions by Atomic Absorption Spectrometry

摘要

The chemical literature lacks specific analytical methods for adequately monitoring copper in copper cyanide plating solutions and cadmium in cadmium cyanide plating solutions during the plating processes. In this report, specific methods are presented that provide acceptable analysis and monitoring of the copper and cadmium in these processes. The optimum operating range of the copper is 16 to 36 g/l in these plating solutions with resulting precisions in the range of 1.3 to 3.0 g/l. The optimum operating range of the cadmium is 17 to 22 g/l in these plating solutions with resulting precisions in the range of 1.3 to 1.8 g/l. Adequate monitoring of these solutions is supported by five years of testing.