Naslov
Study of cadmium complexation at high ligand concentrations

Autori
Branica, Marko ; Pižeta, Ivanka ; Branica-Jurković, Gina ; Zelić, Marina

Izvornik
Marine chemistry (0304-4203) 28 (1989), 1-3; 227-239

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

Ključne riječi
cadmium complexation ; high ligand concentrations ; chloride ; glycine ; diglycine ; triglycine

Sažetak
Using square-wave voltammetry, cadmium complexation with chloride ions and small organic molecules has been studied at high ligand concentrations and high ionic strengths, i.e. conditions that can be found or expected in nature (seawater, body fluids, etc.) Over a relatively wide range of ionic strengths (I = 0.5-6 mol l-1) the number of chloride complexes found and their stability constants were in a very good agreement with the literature data. With all organic ligands (glycine, diglycine and triglycine), three consecutive complex species have been found at I=0.1 mol l-1 instead of two as published previously. The first stability constants were in satisfactory agreement with literature values. All measurements have been performed over ligand concentration ranges as wide as possible. Only in such a case can all the complexes be detected and their stability constants calculated.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

POVEZANOST RADA