Abstract
This paper reports the application of a new type of material for matrices with high lipid content – zirconium based sorbent (Z-Sep+) which improves fat removal from the extracts for the simultaneous determination of polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticide (OCPs) residues in food of animal origin with gas chromatography−mass spectrometry (selected-ion monitoring) detection. The sample preparation was based on the modified QuEChERS method and was evaluated in terms of analyte recoveries, linearity, selectivity, repeatability, limits of detection and quanfication. The obtained results showed that the recovery ratios for both groups of investigated compounds were fit to EU specified ranges with the relative standard deviation lower than 10% for most compounds. In both cases acetonitrile turned out to be better solvent than ethyl acetate taking into account the recovery ratio as well as the purity of the samples. The results show that Z-Sep+ can be successfully applied for the simultaneous determination of OCPs residue and PAHs in food of animal origin.
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