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Eggs can represent a food susceptible to contamination, with bioaccumulation potential for POPs. The Province of Taranto, Southern Italy, is of particular relevance in this context because of the presence of industrial sources of PCDD/Fs and PCBs. The aim of this study was to analyze and report the levels of these contaminants in hen eggs sampled in farms located within a radius of 20 km from the industrial area of Taranto. Between 2013 and 2021, 227 hen eggs were collected, according to a special monitoring plan of the Prevention Department. Samples were analyzed by the National Reference Laboratory for Halogenated POPs in Feed and Food. Median (IQR) values were: 0.28 (0.59) pg WHO-TEQ/g fat for PCDD/Fs, 0.89 (1.70) pg WHO-TEQ/g fat for PCDD/Fs + DL-PCBs, 0.57 (1.16) pg WHO-TEQ/g fat for DL-PCBs, 2.24 (5.51) ng/g fat for NDL-PCBs. Samples not-compliant (Reg. 1881/2006/EC and amendments) for at least one contaminant were 17 (7.5%). No contaminants values or exceedances showed a statistically significant correlation with distance from industrial area ( p  &gt; 0.05). Higher PCDD/Fs values were observed in first and second quarters ( p  &lt; 0.05). All contaminants’ values pairwise combinations showed significant ( p  &lt; 0.0001) strong ( ρ  &gt; 0.7) correlation. According to our epidemiological investigations, the exceedances are to be attributed to factors mainly related to farmers’ wrong habits. These results confirmed the importance of the monitoring of contaminants’ levels in the matrices at risk as well as to focus on enhancing good management practices on eggs-producing farms.

PCDD/Fs and PCBs in hen eggs from a contaminated area in Italy: a 9 years spatio-temporal monitoring study