Optimisation of headspace solid-phase microextraction for the analysis of volatile phenols in wine

被引:92
作者
Meijías, RC [1 ]
Marín, RN [1 ]
Moreno, MDG [1 ]
Barroso, CG [1 ]
机构
[1] Univ Cadiz, Fac Sci, Dept Analyt Chem, E-11510 Puerto Real, Spain
关键词
wine; headspace solid-phase microextraction; phenols;
D O I
10.1016/S0021-9673(03)00541-7
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Headspace solid-phase microextraction has been applied to the analysis of volatile phenols in wine. Silica fibre coated with Carbowax-divinylbenzene was found to be more efficient at extracting these compounds than other fibres such as those coated with polydimethylsiloxane, polyacrylate, carboxen-polydimethylsiloxane, and polydimethylsiloxane-divinylbenzene. Different parameters such as extraction time, temperature of the sample during the extraction, ionic strength and sample volume were optimised using a two-level factorial design expanded further to a central composite design, in order to evaluate several possibly influential and/or interacting factors. The headspace (HS)-SPME procedure developed shows adequate detection and quantitation limits, and linear ranges for correctly analysing these compounds in wine. The recoveries obtained were close to 100%, with repeatability values lower than 16%. The method was applied to a variety of white and red wines. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:11 / 20
页数:10
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