Multiresidue method for the determination of organophosphorus pesticides in still wine and fortified wine using solid-phase microextraction and gas chromatography – Tandem mass spectrometry

• Author(s): Martins, Joana ; Esteves, Cristina ; Limpo-Faria, Ana ; Barros, Paulo ; Ribeiro, Natália ; Simões, Tomás ; Correia, Manuela ; Delerue-Matos, Cristina
• Date: 2011
• Persistent ID: http://hdl.handle.net/10400.22/3001
• Origin: Repositório Científico do Instituto Politécnico do Porto
• Subject(s): Fortified wine; GC=MS/MS; Organophosphorus pesticides; SPME; Still wine
• Document Type: Journal article
• Language: English
• Contributor(s): REPOSITÓRIO P.PORTO

Description

A SPME-GC-MS/MS method for the determination of eight organophosphorus pesticides (azinphos-methyl, chlorpyriphos, chlorpyriphos-methyl, diazinon, fenitrothion, fenthion, malathion, and methidathion) in still and fortified wine was developed. The extraction procedure is simple, solvent free, and without any sample pretreatment. Limits of detection (LOD) and quantitation (LOQ) values in the range 0.1–14.3 lg/L and 0.2–43.3 lg/L, respectively, were obtained. The LOQ values are below the maximum residue levels (MRLs) established by European Regulation for grapes, with the exception of methidathion. Coefficients of correlation (R2) higher than 0.99 were obtained for the majority of the pesticides, in all different wines analyzed.