Collect. Czech. Chem. Commun.
1990, 55, 2904-2913
https://doi.org/10.1135/cccc19902904
The polarographic and voltammetric determination of the 3'-halogen derivatives of N,N-dimethyl-4-aminoazobenzene
Jiří Bareka, Jana Kubíčkováa, Viktor Mejstříkb, Oldřich Petirab and Jiří Zimaa
a Department of Analytical Chemistry, Charles University, 128 40 Prague 2
b Department of Toxicology, Research Institute for Organic Synthesis, 533 51 Pardubice-Rosice nad Labem
Abstract
The polarographic reduction of the 3'-halogen derivatives of N,N-dimethyl-4-aminoazobenzene was studied in mixed water-methanol medium and optimum conditions were found for the determination of these genotoxic substances by tast polarography in the concentration range 1 . 10-4 to 2 . 10-6 mol l-1, differential pulse polarography at a dropping mercury electrode in the range 1 . 10-4 to 2 . 10-7 mol l-1 and fast scan differential pulse voltammetry at a hanging mercury drop electrode in the range 1 . 10-6 to 2 . 10-8 mol l-1. The increase in the sensitivity resulting from adsorptive accumulation of the studied substances on the surface of a hanging mercury drop can be utilized in the determination using the latter method in the concentration range 1 . 10-8 to 2 . 10-9 mol l-1.
