Abstract
This study is focused on the optimization and application of an analytical methodology for the determination of 15 selected pesticides in three substrates during the vinification process. QuEChERS extraction was used followed by GC-MS to develop a simple and rapid method for the determination of these compounds. The optimized methodology was validated, providing for all selected pesticides excellent linearity, recoveries ranging between 60.9% and 95.0% and LOQs lower than 50 ng g−1 f for all substrates. The developed methodology was tested on real samples of grapes, must and wine obtained from a winery in the Epirus region. The results indicated the existence of some of the selected pesticides at comparatively low levels in contrast to the valid MRLs.
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