On the reactivity of benzidinesulfonic acids and their applications in analysis: Reaction of cupric salts with o-benzidinemonosulfonic acid in presence of alkali thiocyanate |
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Authors: | F. Buscaróns F. Nieto |
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Affiliation: | Laboratory of analytical Chemistry, Faculty of Science, The University, BarcelonaSpain |
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Abstract: | In the present work a new method for the detection of coppcr(II) is described. It is based on the reaction of this ion with the alkali salts of o-benzidinemonosulfonic acid, alkali thiocyanate being present. The sensitivity of this test is (l0-5.7); it ia specific for the Cu+2 ion and can also be used to distinguish quickly the above-mentioned acid from the benzidine o-o'-disulfonic and benzidine m-m' '-disulfonic acids. It is believed that the mechanism of the reaction can be explained by an oxidation process. |
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