Electrochemical studies on sulphonephtalene part 3. Kinetics of electrochemical reduction of Xylenol orange and square wave adsorptive catodic stripping voltammetry of its lanthanum complex.
The electrochemical reduction behaviour of xylenol orange, XO, in aqueous medium was studied over a pH range of 2.3–9.6 at a hanging mercury drop electrode, HMDE, on the basis of cyclic voltammetric, and double-potential step chronoamperometric and chronocoulometric data. The experimental results indicate that in acid medium (pH 2.28) the reduction of XO proceeds via an ECEC, first-order mechanism giving ... Read more