Adsorptive stripping voltammetry of metal ions (Review)

The adsorptive stripping voltammetry of various metal ions is described whi le emphasizing the ligands used, sensitivities and practical applications. First, the historical development of polarography is mentioned. Stripping v oltammetric methods involving preconcentration by charge transfer reactions are described. Cathodic and anodic adsorptive stripping voltammetric metho ds are described for riboflavin as an example. In the preconcentration of a dsorptive stripping voltammetry of metal ions, the adsorption of complexes is employed. The adsorptive stripping voltammetry of nickel with 2,2'-bipyr idine (ligand)is explained. Metals are classified according to the periodic table (Table 1) and the adsorptive stripping voltammetric methods are desc ribed. The ligands which are frequently used to form complexes are listed i n Table 2.. Ultrasensitive catalytic adsorptive stripping voltammetry, whic h exhibits sensitivity down to PM, is also described.