Occurrence of halogenated flame retardants in sediments and sea urchins (Paracentrotus lividus) from a North African Mediterranean coastal lagoon (Bizerte, Tunisia)

Occurrence of Halogenated and Organophosphate Flame Retardants in Sediments and Eels (Anguilla anguilla) From Bizerte Lagoon, Tunisia

“…In this present study, the HQ results are all below 1 suggesting a low deleterious risk to PBDEs and OPFRs through the consumption of eel from Bizerte city. Similar results were recently obtained by Mekni et al (2019) for sea urchin (Paracentrotus lividus), clams (Ruditapes decussatus) (El Megdiche et al, 2017), and in fish (Solea solea) (Ben Ameur et al, 2013) from the Bizerte Lagoon, Tunisia. Around the word, our HQ values are also similar to those reported in fish and mussels from Italy (Martellini et al, 2016) and in seafood from chine (Miyake et al, 2008;Ni et al, 2012).…”

“…On the other hand, a previous published work also reported lower dietary intake in swordfish from Spain (0.06 ng/day) (Domingo et al, 2006). Regarding HNs, our dietary intake of 131 ng/day was higher than that reported by Mekni et al (2019) in sea urchin (42 ng/day) Ali et al (2012). b Kim et al (2013).…”

“…PCB levels varied from 0.89 to 6.63 ng/g dw being similar to those obtained in our study for PBDEs (1-79-19.1 ng/g dw), whereas concentrations of PAHs were higher ranging from 16.9 to 394 ng/g dw. In our work, the analysis of PBDEs in surface sediment show a difference on concentration values with a recent published study reported by Mekni et al (2019), which focused on the analysis of the same compound in the same sampling points. The concentration levels obtained in the previous work ( PBDEs mean value, 5.51 ng/g dw), were similar but slightly lower than those obtained in this study ( PBDEs mean value, 7.86 ng/g dw).…”

“…It supported many anthropogenic pressures, such as industrial, urbanization and agricultural activities (metallurgical industry, cement works, tire pollution factories, etc.). Previous research described the occurrence of different POPs in this area: polychlorinated biphenyl (PCBs) (Derouiche et al, 2004;Barhoumi et al, 2014b), polycyclic aromatic hydrocarbons (PAHs) (Trabelsi and Driss, 2005;Barhoumi et al, 2014cBarhoumi et al, , 2016, and PBDEs and their methoxylated analogs (MeO-PBDEs) (Ben Ameur et al, 2013;Mekni et al, 2019). In this area, POPs appear with high concentration in surface sediment ( PAHs from 16.9 to 394 ng/g dw) (Barhoumi et al, 2014c), in fish ( PBDEs: 171 ng/g lw) (Ben Ameur et al, 2013), and clams ( PBDEs: 95.6 ng/g lw) (El Megdiche et al, 2017).…”

Occurrence of legacy and emerging organic pollutants in whitemouth croakers from Southeastern Brazil

“…The dechlorane-related contamination pattern observed in whitemouth croakers (Dec 603 N DP N mirex ≈ Dec 602 N CP) in the present study suggest, for the first time, Dec 603 as the most abundant DRC in environmental samples. This pattern is notable since Dec 603 is usually reported as low or non-detected values in biota (Houde et al, 2014; Mekni et al, 2019;Rjabova et al, 2016). Patented by Hooker Chemicals (now Occidental Chemical Company, OxyChem, United States), Dec 603 is identified as a flame retardant, and also as an impurity in technical products of aldrin and dieldrin (legacy pesticides) (Shen et al, 2011).…”