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Utilização da múltipla voltametria de onda quadrada na determinação eletroanalítica de compostos orgânicos e inorgânicos

2007; Brazilian Chemical Society; Volume: 30; Issue: 2 Linguagem: Inglês

10.1590/s0100-40422007000200038

1678-7064

Djenaine De Souza, Andressa Galli, Marcelo L. Calegaro, Sérgio Antônio Spínola Machado, Roberto C. Pires,

Electrochemical sensors and biosensors

INORGANIC COMPOUNDS.This paper reports the development of multiple square wave voltammetry and the possibilities of its use for electroanalytical determinations of organic and inorganic compounds with the improvement of the signalto-noise ratios and detection limits 2-3 orders of magnitude lower than those obtained with conventional square wave voltammetry.The theoretical aspects and analytical applications were demonstrated as an increased analytical response (current) and application of different pulse modes for different redox processes.Preliminary results obtained for several redox systems using different electrode surfaces are shown, demonstrating also that MSWV represents an excellent alternative for the determination of ultra-traces of organic and inorganic compounds.