Free sulphite determination in wine using screen-printed carbon electrodes with prior gas-diffusion microextraction

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Ramos, RM (Autor) FCUP; Goncalves, LM (Autor) Outra; Vyskocil, V (Autor) Outra; Rodrigues, JA (Autor) FCUP

Revista

Título: Electrochemistry Communications

Vol. 63

Páginas: 52-55

ISSN: 1388-2481

Editora: Elsevier

Indexação

ISI Web of Knowledge - 35 Citações

Scopus - 35 Citações

Outras Informações

ID Authenticus: P-00K-273

DOI: 10.1016/j.elecom.2015.12.010

Abstract (EN): Gas-diffusion microextraction was employed in the extraction of sulphites in wines aiming their electrochemical determination, which was achieved by square-wave voltammetry using screen-printed carbon electrodes. Sulphites are additives commonly used in many produced goods, particularly food products. The developed methodology showed good limits of detection (0.4 mg L-1) and quantification (1.3 mg L-1). The proposed method was also compared with the reference methodology used by the wine industry (the Ripper method, an iodometry) showing no significant differences in the obtained results. Therefore, a simple, cheap and portable alternative for the determination of sulphites in wine is presented.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4