Direct simultaneous determination of Cu, Ni and Y in seawater using adsorptive cathodic stripping voltammetry with mixed ligands

6 páginas, 4 figuras, 1 tablaAn analytical procedure is proposed for the direct simultaneous determination in a single scan of Cu, Ni and V in seawater by means of adsorptive cathodic stripping voltammetry (ACSV) with mixed ligands (DMG and catechol). Optimum conditions for the determination of these three elements were studied. Detection limits of the technique depended upon the reproducibility of the procedura blank, and were found to be 0.5 nM for Cu, 0.4 nM for Ni and 0.3 nM for V. The method is suitable for the analysis of estuarine, coastal and open-ocean waters, and especially to study the metal contamination in areas subject to oil spill eventsThis work is a contribution to the project entitled Biogeochemical budget and 3D modeling of heavy metal fluxes in a Galician Ria , financied by CICYT (ref. REN2003- 04106-C03). A. Cobelo-Garc a would like to thank the Spanish Ministry of Science for financial support (FPI grant).Peer reviewe