ELECTROANALYTICAL STUDIES ON SOME HYDROXYAZOPYRAZOLOPYRIDINE COMPOUNDS

Protonation constants of some azo compounds were determined using the pH-metric and polarographic techniques. Also the polarographic behavio ur was examined to throw some light on the reduction process of the st udied compounds. The reduction process occurs through an irreversible 4-electron step corresponding to the reduction of the N=N centre. The resulted reduction peaks were used to quantify the mentioned compounds using cathodic stripping voltammetric technique.