Reactions of o,o′-Dihydroxy Azo Dyes with the Third Group M(III) Ions: A Spectroscopic and Electrochemical Study

Figure 7

Voltammograms of 4⋅10⁻⁵ M EBT (a) and in the presence of 4⋅10⁻⁵ M Sc(III) (b); pH 5.5, 𝜐=0.5V⋅s⁻¹.