Electrochemical sensing of total sulphites in beer using non-modified screen-printed carbon electrodes

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Ramos, RM (Author) FCUP; Brandao, PF (Author) Other; Goncalves, LM (Author) Other; Vyskocil, V (Author) Other; Rodrigues, JA (Author) FCUP

Journal

Title: Journal of the Institute of Brewing

Vol. 123

Pages: 45-48

ISSN: 0046-9750

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 18 Citations

Scopus - 18 Citations

Other information

Authenticus ID: P-00M-QTC

DOI: 10.1002/jib.402

Abstract (EN): An analytical method that combines gas-diffusion microextraction with square-wave voltammetric detection using commercial non-modified screen-printed carbon electrodes was employed in the determination of total sulphites in beer. The developed methodology showed low limits of detection (0.050 mg L-1) and quantification (0.17 mg L-1) and an intraday precision of 4.8%. The proposed method was also compared with a reference methodology used in the beer industry (EBC method 9.25.3) showing no significant differences in the obtained results. This is a simple, cheap and notably portable alternative for brewers that wish to quantify sulphites in their products. Copyright (C) 2017 The Institute of Brewing & Distilling

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4