Analysis of six fungicides and one acaricide in still and fortified wines using...

• Author(s): Martins, Joana ; Esteves, Cristina ; Limpo-Faria, Ana ; Barros, Paulo ; Ribeiro, Natália ; Simões, Tomás ; Correia, Manuela ; Delerue-Matos, Cristina
• Date: 2012
• Persistent ID: http://hdl.handle.net/10400.22/2017
• Origin: Repositório Científico do Instituto Politécnico do Porto
• Subject(s): Fungicide; Acaricide; SPME; GC–MS/MS; Wine
• Document Type: Article
• Language: English

Description

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 proposedmaximumresidue limits (MRLs) for these compounds in grapes and below the suggested limits for wine (MRLs/10), with the exception of captan.