OP B6. MULTIRESIDUE ANALYSIS OF PESTICIDES IN FRUIT JUICES BY MATRIX SOLID-PHASE DISPERSION AND LIQUID CHROMATOGRAPHY – TANDEM MASS SPECTROMETRY

M. Radišić, N. Dujaković, S. Grujić, T. Vasiljević, M. Laušević

Faculty of Technology and Metallurgy, Karnegijeva 4, Belgrade

A rapid and sensitive liquid chromatography–tandem mass spectrometry method has been applied for the analysis of acephate, monocrotophos, carbendazim, acetamiprid, dimethoate, simazine, carbofuran, atrazine, diuron, DNOC, malathion and tebufenozide in fruit juices. Extracts were obtained by matrix solid-phase dispersion sample preparation technique. The quantification of the analytes was carried out using the most sensitive transition. A survey on residues of twelve selected pesticides in commercially available fruit juices was performed. Apple, peach, raspberry and orange juices of different brands, produced by different domestic companies, were purchased in local supermarkets and analyzed. Almost 90% of the investigated fruit juices contained pesticide residues. However, detected levels were always below the MRLs in fruits set by the EU. The confirmation of residues detected in real samples was performed by repeated injection and acquiring additional transitions to that used for quantification.