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

被引：20

作者：

Ramos, Rui M. ^{[1
]}

Brandao, Pedro F. ^{[1
]}

Goncalves, Luis M. ^{[1
]}

Vyskocil, Vlastimil ^{[2
]}

Rodrigues, Jose A. ^{[1
]}

机构：

[1] Univ Porto, Fac Ciencias, Dept Quim & Bioquim, REQUIMTE LAQV, Rua Campo Alegre S-N, P-4169007 Oporto, Portugal

[2] Charles Univ Prague, Fac Sci, Dept Analyt Chem, UNESCO Lab Environm Electrochem, Hlavova 2030-8, Prague 12843 2, Czech Republic

来源：

JOURNAL OF THE INSTITUTE OF BREWING | 2017年 / 123卷 / 01期

关键词：

brewing; electroanalysis; food quality; sample preparation; sensor; sulphurous; GAS-DIFFUSION MICROEXTRACTION; TOTAL SULFUR-DIOXIDE; VOLTAMMETRIC DETERMINATION; HPLC-UV; WINE; REDUCTION; BEVERAGES; DIACETYL;

D O I：

10.1002/jib.402

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

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

引用

页码：45 / 48

页数：4

共 27 条

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