Naslov
Pseudopolarography of totally irreversible redox reactions

Autori
Branica, Gina ; Lovrić, Milivoj

Izvornik
Electrochimica acta (0013-4686) 42 (1997), 8; 1247-1251

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Trace-metal speciation; Anodic-stripping voltammetry; Stability constants; ASV; Zinc; Polarograms; Simulation; Electrode

Sažetak
Properties of pseudopolarograms of inert complexes of metal ions and polydentate ligands are described and their application in speciation measurements is discussed. Pseudopolarography can be used to distinguish labile metal complexes from the inert complex species and to estimate the distribution of metal ions at a trace level. Pseudopolarograms of Pb(II)-nitrilotriacetic acid chelate were analysed and the stability constant log(k)=11.9 of the complex, the pseudopolarographic half-wave potential E_1/2=-0.65 V vs Ag/AgCl, the charge transfer coefficient alpha=0.4 and the standard rate constant k_s=2 x 10^(-3) cm/s^(-1) of its redox reaction were determined.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA