Abstract

Several electrochemical techniques were used to inve tigate the adsorption of l-phenylpyrazolidin-3-one and its oxidation products to metal electrode.The experiment at pH 10.3 and pH 13 indicate that physical adsorption of the developer and l-phenylpyrazolin-3-one but not of the radical oxidation product occurs. No poisoning of the electrode by any species was observed over the potential range considered.It was concluded that adsorption does not playa dominant role in superadditivity and the latter could be explained solely in term of mass and electron transfer.

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