The analysis of pesticide residues in wine is a difficult process due to the complexity of the matrix that contains many classes of interfering compounds, which prevents a proper qualitative and quantitative analysis. The key step of the commonly applied QuEChERS method is the removal of such interfering substances. The selection of sorbents for the „clean-up” is essential to allowing the reduction of the matrix effect on the analysis and to obtain acceptable recovery parameters. Therefore, the purpose of the research was to examine the effect of the selected „clean-up” sorbents or their combination on the recovery and the matrix effect (ME) in the analysis of white and red wine in terms of 490 active substances of plant protection products using gas and liquid chromatography techniques based on the modified QuEChERS protocol. The most effective solution was the use of primary and secondary amine sorbents (average recoveries ranging from 70.5% to 117.1%, and matrix effect of –20% < ME < 20%) for most of the pesticides analysed.

Analiza pozostałości pestycydów w winie jest trudnym procesem ze względu na złożoność matrycy, zawierającej wiele klas związków interferujących, uniemożliwiających prawidłową analizę jakościową i ilościową. Kluczowym etapem powszechnie stosowanej metody QuEChERS jest usunięcie substancji interferujących. W tym celu, ważnym jest dobór sorbentów „clean-up” umożliwiających redukcję efektu matrycy (ME) i uzyskanie akceptowalnych odzysków. Dlatego też, celem badań było zbadanie wpływu wybranych sorbentów „clean-up” bądź ich kombinacji na odzysk i efekt matrycy w analizie wina białego i czerwonego 490 substancji czynnych środków ochrony roślin przy wykorzystaniu technik chromatografii gazowej i cieczowej w oparciu o zmodyfikowany protokół QuEChERS. Najskuteczniejszym rozwiązaniem okazało się użycie pierwszo- i drugorzędowej aminy, jako sorbentu do oczyszczania (średnie odzyski w zakresie 70,5−117,1% i wartości efektu matrycy –20% < ME < 20%) dla większości analizowanych pestycydów.

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