Gas chromatography-mass spectrometry strategies for the accurate and sensitive speciation of sulfur dioxide in wine
| Autor: | Vanesa Carrascón, Mónica Bueno, Ignacio Ontañón, Vicente Ferreira |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Diputación General de Aragón, Bueno, Mónica, Ferreira, Vicente, Bueno, Mónica [0000-0002-5904-8506], Ferreira, Vicente [0000-0002-4353-2483] |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
media_common.quotation_subject
Analytical chemistry Free SO2 Wine Acetaldehyde Sensitivity and Specificity 01 natural sciences Biochemistry complex mixtures Gas Chromatography-Mass Spectrometry 040501 horticulture Analytical Chemistry HS-GC–MS chemistry.chemical_compound Bound SO2 Sulfur Dioxide Analytical strategy Molecular SO2 Sulfur dioxide media_common Detection limit Chromatography Chemistry 010401 analytical chemistry Organic Chemistry 04 agricultural and veterinary sciences General Medicine Quantitative determination 0104 chemical sciences Speciation Gas chromatography–mass spectrometry 0405 other agricultural sciences Oxidation-Reduction |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | Understanding the chemistry of wine oxidation requires the accurate and sensitive quantitative determination of the most important molecular species which SO2 can form. An analytical strategy based in three independent static headspace GC–MS determinations is proposed in order to obtain information about the total, nominally free and truly free levels of SO2. Nominally free forms are directly determined after sample acidulation, total forms require the previous incubation at 100 °C, and truly free forms are determined after preconcentration of the headspace of the undisturbed sample in an alkaline solution. The two first determinations provide results equivalent to those reported by the aeration-oxidation (A-O) method, with lower limits of detection (1 mg L−1) and better repeatabilities ( This work has been funded by the Spanish Ministry of Economy and Competitiveness (Project AGL2014-59840). V.C. has received a grant from the Spanish FPU program. Funding from Diputación General de Aragón (T53) and Fondo Social Europeo is acknowledged. |
| Databáze: | OpenAIRE |
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