Collect. Czech. Chem. Commun.
1990, 55, 2636-2647
https://doi.org/10.1135/cccc19902636
The polarographic and voltammetric determination of 4-aminoazobenzene
Jiří Bareka, Helena Kvapilováa, Viktor Mejstříkb, Oldřich Petirab and Jiří Zimaa
a Department of Analytical Chemistry, Charles University, 128 40 Prague 2
b Department of Toxicology, Research Institute of Organic Synthesis, 532 18 Pardubice-Rybitví
Abstract
The polarographic reduction of genotoxic 4-aminoazobenzene was studied, a mechanism was proposed and conditions were found for the analytical determination using Tast polarography in the range 1 . 10-4 - 2 . 10-6 mol l-1 and differential pulse polarography in the range 1 . 10-4 - 2 . 10-7 mol l-1. The sensitivity can be further increased by using fast scan differential pulse voltammetry at a hanging mercury drop electrode combined with adsorptive accumulation of the test substance on the surface of the working electrode, permitting the determination to be carried out in the range 1 . 10-7 - 2 . 10-10 mol l-1. The anodic oxidation of 4-aminoazobenzene was also studied at a glassy carbon solid electrode and conditions were found for its analytical utilization in the range 1 . 10-4 - 2 . 10-6 mol l-1 using classical or differential pulse voltammetry at a rotating disk electrode.
