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 Determination of sulfur dioxide in wine using a quartz crystal microbalance
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/6821

title: Determination of sulfur dioxide in wine using a quartz crystal microbalance
authors: Gomes, MT
Rocha, TA
Duarte, AC
Oliveira, JP
keywords: Food and Feed Chemistry
issue date: 1996
publisher: American Chemical Society
abstract: A new method for the analysis of both total and bound SO2 in wine is proposed, based on a quartz crystal microbalance (QCM), and it is compared with the widely used Ripper method. The proposed method is faster than the Ripper's, and the instrumentation is either homemade or widely available. When both methods are applied to the same sample, the results obtained using the QCM method are bracketed in an interval less than one-tenth the size of that obtained using the Ripper method. Although the SO2 concentrations found using the QCM method correlate well with the ones obtained with the Ripper method, the results are systematically higher, which can be explained as due to the absence of interferences known to affect the Ripper method.
URI: http://hdl.handle.net/10773/6821
ISSN: 0003-2700
publisher version/DOI: http://dx.doi.org/10.1021/ac9510548
source: Analytical Chemistry
appears in collectionsDQ - Artigos

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