| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313348 |
| ISSN: | 0100-4042 |
| Autors: | Rodgher, Vanessa S1 Stradiotto, Nelson R Zanoni, Maria Valnice B Barros, Aquiles A2 |
| Institucions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Quimica, Araraquara, Sao Paulo. Brasil 2Rede de Quimica e Tecnologia, Faculdade de Ciencias do Porto, Porto. Portugal |
| Any: | 2006 |
| Període: | Jul |
| Volum: | 29 |
| Número: | 4 |
| Paginació: | 662-665 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | 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 hidrazine concentration of 0.02 mol L-1. The detection limit was 2.38 x 10-7 mol L-1. The method was applied satisfactorily to the determination of total aldehyde in fuel ethanol samples without any pre-treatment |
| Disciplines | Ingeniería, Química |
| Paraules clau: | Ingeniería de energéticos, Química analítica, Acetaldehído, Reducción química, Combustible de etanol |
| Keyword: | Engineering, Chemistry, Energy engineering, Analytical chemistry, Acetaldehyde, Chemical reduction, Fuel ethanol |
| Text complet: | Texto completo (Ver HTML) |
