Collect. Czech. Chem. Commun. 1986, 51, 25-33

Polarographic determination of azobenzene

Jiří Barek and Roman Hrnčíř

Department of Analytical Chemistry, Charles University, 128 40 Prague 2


Conditions were found for the determination of azobenzene by means of DC, AC, TAST, DP, and FSDP polarography and linear sweep voltammetry on a hanging mercury drop electrode in the medium of aqueous methanol, which ensures a sufficient solubility of azobenzene. In the latter two methods, the detection limit was around 10-8 mol/l; a still lower value could be attained by preliminary accumulation of azobenzene, i.e. adsorption on the electrode surface.