engleski

Novel multiresidue method for determination of pesticides in red wine using gas chromatography-mass spectrometry and solid phase extraction

A new multiresidue method was developed for the determination of 25 pesticide residues in red wine by gas chromatography coupled to mass spectrometry with a single run of 23.63 min. Samples were extracted from wine with solid phase extraction using Oasis HLB. Mixture of methanol and water was used for rinsing, while acetonitrile and n-hexane were used as elution solvents. Method was validated according to SANCO/12571/2013 criteria in wide linearity range (LOQ-400 μg L-1). Limits of detection and quantification were well below 10 µg L-1 for most pesticides and recoveries at 2 x LOQ and 10 x LOQ concentration levels were in range 70- 120%. Precision, expressed as relative standard deviation, was always under 14%. The method was applied to 32 red wine samples from Croatia. Out of 30 samples, a total of 15 pesticides were detected in 16 wines, while 7 pesticides had increased concentrations.

multiresidue method ; GC-MS ; pesticides residue ; red wine ; solid phase extraction

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