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Newman, Ernest James (1964) Precipitation of copper from homogeneous solution. Doctoral thesis, Sir John Cass College.
The principles of precipitation from homogeneous solution have been applied to the gravimetric determination of copper as cuprous thiocyanate. Several methods of producing homogeneous precipitation have been examined and the use of hydroxyammonium chloride as a reducing agent for cupric ions, in the presence of thiocyanate ions, was found to satisfy the necessary conditions, and to produce a precipitate which was free from the disadvantages of that obtained by conventional methods.
The various conditions for the method have been investigated and the optimum procedure has been specified. The method has been applied to the determination of copper in solutions containing no other constituent, and in a range of alloys containing copper.
In addition, the method has been shown to have advantages in the quantitative separation of major amounts of copper from minor and trace quantities of a number of other metals without involving losses of these metals by adsorption or occlusion.
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