Analysis of six fungicides and one acaricide in still and fortified wines using solid-phase microextraction-gas chromatography/tandem mass spectrometry |
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Authors: | Joana Martins,Cristina EstevesAna Limpo-Faria,Paulo BarrosNatá lia Ribeiro,Tomá s Simõ esManuela Correia,Cristina Delerue-Matos |
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Affiliation: | a IVDP, Instituto dos Vinhos do Douro e do Porto, Rua de Ferreira Borges, 27, 4050-253 Porto, Portugal b REQUIMTE, Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal |
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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 (R2) > 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. |
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Keywords: | Fungicide Acaricide SPME GC-MS/MS Wine |
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