alexa Validation and global uncertainty of a liquid chromatographic with diode array detection method for the screening of azoxystrobin, kresoxim-methyl, trifloxystrobin, famoxadone, pyraclostrobin and fenamidone in grapes and wine.


Journal of Nutrition & Food Sciences

Author(s): de Melo Abreu S, Caboni P, Cabras P, Garau VL, Alves A

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Abstract Azoxystrobin, kresoxim-methyl, trifloxystrobin, pyraclostrobin, famoxadone and fenamidone are permitted Q(o) Inhibitor (Q(o)I) fungicides applied to vine in some European countries for the treatment of downy and powdery mildews. In this work, a method is validated for the analysis of these fungicides in grapes and wine. This screening method consists in a simple one step liquid-liquid extraction followed by liquid chromatography (LC) fitted with a diode array detector (DAD). Limits of detection for grapes and wine were below 0.2 mg kg(-1) or mg l(-1), precision was not above 13\%, and recoveries were, on average, 95+/-5\% for grapes and 104+/-6\% for wine. Global uncertainties evaluated in the concentration range from 0.25 to 2.50 mg l(-1) were below 20\%. A confirmatory method by gas chromatography (GC) with mass spectrometry (MS) detection was used. This article was published in Anal Chim Acta and referenced in Journal of Nutrition & Food Sciences

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