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Square-wave adsorptive-stripping voltammetric detection in the quality control ...
Nouws, Henri P. A.; Delerue-Matos, Cristina; Barros, Aquiles A.; Rodrigues, José A.; Santos-Silva, Alice; Borges, FernandaElectroanalytical methods based on square-wave adsorptive-stripping voltammetry (SWAdSV) and flow-injection analysis with square-wave adsorptive-stripping voltammetric detection (FIA-SWAdSV) were developed for the determination of fluoxetine (FXT). The methods were based on the reduction of FXT at a mercury drop electrode at -1.2 V versus Ag/AgCl, in a phosphate buffer of pH 12.0, and on the possibility of accu...
Eletroanálise de derivados acetaldeído com hidrazina e determinação em amostras...
Rodgher,Vanessa S.; Stradiotto,Nelson R.; Zanoni,Maria Valnice B.; Barros,Aquiles A.A square wave voltammetric method is described for the determination of acetaldehyde using the derivatization reaction with hydrazine sulphate, based on the reduction of hydrazone generated as a product that exhibits a single well-defined peak at -1.19V in acetate buffer at pH 5. Calibration graphs were obtained from 1.0 x 10-6 mol L-1 to 10 x 10-6 mol L-1 of acetaldehyde, using a reaction time of 8 min and a h...
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