Application of catalytic adsorptive stripping voltammetry in water analysis

The application of catalytic adsorptive striping voltammetry (CAdSV) for the determination of the trace elements in water is presented. The CAdSV, coupling of very efficient adsorptive accumulation of the electroactive species on the electrode surface with the catalytic reaction, provides a significant amplification of the analytical response, and consequently a considerable decrease of the detection limit, as well as an improvement of the selectivity of the determination. The course of the catalytic reactions occurring in catalytic systems, which is most frequently applied in CAdSV analysis, is given. The features and advantages of the CAdSV method and its exploitation in ultratrace analysis of water samples are discussed. Numerous examples of the CAdSV systems, which have found application in the determination of Co, Cr, U, Fe, Mo, Pt, Rh, Ti, W and V, as well as of some anions and organic substances in various kinds of water, are listed.

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