Anodic reactions of the halides in dimethyl sulfoxide at the pyrolytic graphite electrode |
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Authors: | HE Zittel FJ Miller |
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Institution: | Analytical Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tenn.U.S.A. |
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Abstract: | The anodic reactions of the halide ions in dimethyl sulfoxide at the pyrolytic graphite electrode have been studied. The iodide ion demonstrates a 3-step oxidation; the bromide, a 2-step oxidation and chloride, a 1-step oxidation. The electrode reaction (X-→ X2 + e-) is complicated by a catalytic reaction occurring after the electrode reaction. The catalytic reaction is important for only bromide and chloride causing a considerable diffusion current enhancement. The αna value for all 3 primary reactions is of the order of 0.5. |
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