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Determination of sulfur dioxide in white wines by flow injection with electrochemical detection
Author(s) -
Cardwell Terence J.,
Cattrall Robert W.,
Nan Chen Guo,
Iles Peter J.,
Hamilton Ian C.,
Scollary Geoffrey R.
Publication year - 1991
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140030822
Subject(s) - sulfur dioxide , white wine , chemistry , electrochemistry , chromatography , white (mutation) , flow injection analysis , wine , inorganic chemistry , electrode , detection limit , food science , biochemistry , gene
The determination of sulfur dioxide in wines by flow injection analysis is described. The method is based on a dual electrochemical system, the upstream electrode being a coulometric electrode that eliminates interferences prior to the detection of the analyte at an amperometric electrode. At least 30 wine samples per hour can be determined by this procedure, and the results for free and total sulfur dioxide concentration in white wines compare favorably with those obtained by the standard aspiration‐oxidation, method.