1. Analysis of six fungicides and one acaricide in still and fortified wines using solid-phase microextraction-gas chromatography/tandem mass spectrometry
- Author
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Martins, Joana, Esteves, Cristina, Limpo-Faria, Ana, Barros, Paulo, Ribeiro, Natália, Simões, Tomás, Correia, Manuela, and Delerue-Matos, Cristina
- Subjects
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FUNGICIDES , *ACARICIDES , *FORTIFIED wines , *SOLID phase extraction , *GAS chromatography , *TANDEM mass spectrometry , *CAPTAN - Abstract
Abstract: A multiresidue gas chromatographic method for the determination of six fungicides (captan, chlorthalonil, folpet, iprodione, procymidone and vinclozolin) and one acaricide (dicofol) in still and fortified wines was developed. Solid-phase microextraction (SPME) was chosen for the extraction of the compounds from the studied matrices and tandem mass spectrometry (MS/MS) detection was used. The extraction consists in a solvent free and automated procedure and the detection is highly sensitive and selective. Good linearity was obtained with correlation coefficients of regression (R 2)>0.99 for all the compounds. Satisfactory results of repeatability and intermediate precision were obtained for most of the analytes (RSD⩽20%). Recoveries from spiked wine ranged from 80.1% to 112.0%. Limits of quantification (LOQs) were considerably below the proposed maximum residue limits (MRLs) for these compounds in grapes and below the suggested limits for wine (MRLs/10), with the exception of captan. [Copyright &y& Elsevier]
- Published
- 2012
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