ANODIC STRIPPING VOLTAMMETRY OF COPPER USING A MERCURY THIN MERCURY FILM ELECTRODE IN THE PRESENCE OF THE COMPLEXING AGENT

摘要

The electrochemical techniques like the stripping methods ensure the determination of the traces -ppb- metals ions[l].There are two main stages in the stripping analysis:Preconcentration ( plating) consists in the application of a constant reductive potential for a period of time,when takes place the adsorbtive accumulation of metal on Hg surface: Me~(n+) + ne~-=> Me(Hg) Stripping,when the metal ions or metal-complex accumulated on Hg surface is oxidised and the oxidation current,proportional with the metal concentration,is determinated.