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  • Title: Determination of Nine Fungicides in Grape and Wine Using QuEChERS Extraction and LC/MS/MS Analysis.
    Author: Martínez G, Morales A, Maestro A, Cermeño S, Oliva J, Barba A.
    Journal: J AOAC Int; 2015; 98(6):1745-51. PubMed ID: 26400110.
    Abstract:
    An analytic procedure was developed for the determination of the fungicides ametoctradin, boscalid, cyazofamid, dimethomorph, fenhexamid, kresoxim-methyl, mepanipyrim, metrafenone, and pyraclostrobin in grape and wine. A modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) procedure was used for the extraction. Analysis of the extract was performed by LC/triple quadrupole-MS/MS. A Poroshell 120 EC-C18 column was used with a programmed gradient mobile phase consisting of (A) acetonitrile containing 0.1% formic acid and (B) water containing 0.1% formic acid and 2 mM ammonium formate. The acceptance criteria for the method were those proposed in the SANCO guide. The method was linear for the range of concentration studied (5-100 μg/L), and R2 values were higher than 0.998 and RSD values below 18%. Recovery was over 73.2% in grape and 76.7% in wines, and there was no case of more than 100% recovery. The recovery RSDs in reproducibility conditions were below 17.13% in grape and 15.6% in wines.
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