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Most of the analyzed samples were certified with all the maximum levels fixed by Commission Regulation (EU) 1259/2011 for this content of PCDD/Fs and also the amount of PCDD/Fs and DL-PCBs. In 2 cases, contamination amounts of the sum PCDD/Fs and DL-PCBs were higher than the activity amounts fixed by EU Recommendation 663/2014. The analytical analysis, performed by Principal Component Analysis (PCA), revealed that the differences in contamination pages associated with