| Texto completo | |
| Autor(es): |
Silva, Tiago Almeida
;
Zanin, Hudson
;
Corat, Evaldo Jose
;
Fatibello-Filho, Orlando
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Electroanalysis; v. 29, n. 3, p. 907-916, MAR 2017. |
| Citações Web of Science: | 8 |
| Resumo | |
A porous electrode material combining the features of vertically aligned multi-walled carbon nanotubes (VAMWCNT) and diamond-like carbon films (DLC) have been developed for a highly sensitive electrochemical sensor. For working electrode preparation, DLC has been grown onto VAMWCNT, forming a porous, conductive and stable composite. The electrochemical performance of this DLC:VAMWCNT electrode has been investigated toward detection and analysis of three well-known molecules, namely paracetamol, codeine and caffeine. A ternary mixture of these analytes was simultaneously determined under optimum experimental conditions using square-wave voltammetry. Wide linear concentration ranges and the limits of detection of 3.34x10(-7)molL(-1), 1.57x10(-7)molL(-1) and 3.67x10(-7)molL(-1) were obtained for paracetamol, codeine and caffeine, respectively. We conclude that the proposed voltammetric method and the DLC:VAMWCNT electrode comprise a reliable methodology for simultaneous determination of paracetamol, codeine and caffeine in biological matrix samples. (AU) | |
| Processo FAPESP: | 14/02163-7 - Desenvolvimento de dispositivos supercapacitores a partir de grafenos, nanotubos de carbono e diamantes |
| Beneficiário: | Hudson Giovani Zanin |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 15/50093-0 - Brazil and UK collaboration for energy storage and supply |
| Beneficiário: | Hudson Giovani Zanin |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |