期刊
JOURNAL OF THE INSTITUTE OF BREWING
卷 123, 期 1, 页码 45-48出版社
INST BREWING
DOI: 10.1002/jib.402
关键词
brewing; electroanalysis; food quality; sample preparation; sensor; sulphurous
资金
- Fundacao para a Ciencia e a Tecnologia/Ministro da Ciencia, Tecnologia e Ensino Superior (FCT/MCTES)
- Fundo Europeu de Desenvolvimento Regional (FEDER) [UID/QUI/50006/2013, POCI/01/0145/FEDER/007265]
- FCT [SFRH/BD/88166/2012, SFRH/BPD/76544/2011]
- Grant Agency of the Czech Republic [P206/12/G151]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/88166/2012] Funding Source: FCT
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
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