Polarographic determination of copper, arsenic and arsenic in copper arsenite |
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Authors: | T. L. Hunter J. F. Hazel Wallace M. McNabb |
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Affiliation: | Department of Chemistry, University of Pennsylvania, Philadelphia 4 Pennsylvania, U.S.A. |
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Abstract: | A method is proposed in which CuII, AsIII and Asv can be determined in copper arsenite without prior separation. It is based on the fact that CuII and AsIII yield prominent, distinguishable, widely-separated cathodic polarographic waves in a 0.1M LiCl-0.01M EDTA—0.001M LiOH solution using a dropping mercury electrode, whereas Asv does not give a wave in this medium. The Asv is determined by difference after reduction with sulphurous acid. |
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