Document Detail


Concurrent quantification of light and heavy sulphur volatiles in wine by headspace solid-phase microextraction coupled with gas chromatography/mass spectrometry.
MedLine Citation:
PMID:  17279596     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A new method based on headspace solid-phase microextraction coupled with gas chromatography/mass spectrometry (HS-SPME-GC/MS) to analyse 13 light and heavy volatile sulphur compounds in the same run was established. For the successful application of the procedure, various adsorption process parameters were optimised. In particular the nature of the adsorptive phase, the temperature, the ionic strength of the sample solutions and the equilibration time were considered. The best extraction conditions, in terms of the maximum signal obtainable for each compound, were obtained with a carboxen-polydimethylsiloxane-divinylbenzene (CAR-PDMS-DVB) 2 cm long coating fibre. The choice of suitable internal standards and the matrix effect were studied and the proposed method was validated by determining linearity, precision and accuracy, evaluating the critical, detection and quantification limits. This method is fast, sensitive and precise and easy to transfer to wine quality control. Finally, the proposed method was applied to the determination of the aforementioned sulphur compounds in 32 red and white wines.
Authors:
Bruno Fedrizzi; Franco Magno; Sergio Moser; Giorgio Nicolini; Giuseppe Versini
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Rapid communications in mass spectrometry : RCM     Volume:  21     ISSN:  0951-4198     ISO Abbreviation:  Rapid Commun. Mass Spectrom.     Publication Date:  2007  
Date Detail:
Created Date:  2007-02-12     Completed Date:  2007-05-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8802365     Medline TA:  Rapid Commun Mass Spectrom     Country:  England    
Other Details:
Languages:  eng     Pagination:  707-14     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2007 John Wiley & Sons, Ltd.
Affiliation:
IASMA Research Center, Agri-Food Quality Department, via Mach 1, 38010 San Michele all'Adige (TN), Italy.
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MeSH Terms
Descriptor/Qualifier:
Gas Chromatography-Mass Spectrometry / methods*
Microchemistry / methods
Solid Phase Microextraction / methods*
Sulfur Compounds / chemistry*
Volatilization
Wine / analysis*
Chemical
Reg. No./Substance:
0/Sulfur Compounds

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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