Persistent and emerging pollutants assessment on aquaculture oysters (Crassostrea gigas) from NW Portuguese coast (Ria De Aveiro)

• Published in: Science of The Total Environment
• Main Authors: Gadelha, Juliana R., Rocha, Andreia Cristina S., Camacho, Carolina, Eljarrat, Ethel, Peris, Andrea, Aminot, Yann, Readman, James W., Boti, Vasiliki I., Nannou, Christina, Kapsi, Margarita, Albanis, Triantafyllos, Rocha, Filipa, Machado, Ana, Bordalo, Adriano Agostinho, Valente, Luísa Maria Pinheiro, Nunes, Maria Leonor, Marques, Antonio, Almeida, C. Marisa R.
• Other Authors: European Commission
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2019
• Subjects: Flame retardants; Nutritional quality; PAHs; Oysters' safety; Personal care products; Seasonal variation; Crassostrea gigas
• Online Access: http://hdl.handle.net/10261/203175; https://doi.org/10.1016/j.scitotenv.2019.02.280; https://doi.org/10.13039/501100000780

The study aim was to determine a range of relevant persistent and emerging pollutants in oysters produced in an aquaculture facility located in an important production area, to assure their safety for human consumption. Pollutants, including 16 PAHs, 3 butyltins (BTs), 29 flame retardants (FRs, including organophosphate and halogenated FRs), 35 pesticides (including 9 pyrethroid insecticides) and 13 personal care products (PCPs, including musks and UV filters), were determined in oysters' tissues collected during one year in four seasonal sampling surveys. The seasonal environmental pollution on the production site was evaluated by water and sediment analysis. Furthermore, oysters' nutritional quality was also assessed and related with the consumption of healthy seafood, showing that oysters are a rich source of protein with low fat content and with a high quality index all year around. Results showed that most analysed pollutants were not detected either in oyster tissues or in environmental matrixes (water and sediments). The few pollutants detected in oyster tissues, including both regulated and non-legislated pollutants, such as a few PAHs (fluorene, phenanthrene, anthracene, fluoranthene, pyrene and indenopyrene), FRs (TPPO, TDCPP, DCP, BDE-47, BDE-209 and Dec 602) and PCPs (galaxolide, galaxolidone, homosalate and octocrylene), were present at low levels (in the ng/g dw range) and did not represent a significant health risk to humans. The observed seasonal variations related to human activities (e.g. tourism in summer) highlights the need for environmental protection and sustainable resource exploration for safe seafood production. © 2019 Elsevier B.V. This work was supported by the Structured R&D&I Project INNOVMAR – “Innovation and Sustainability in the Management and Exploitation of Marine Resources” (ref. NORTE-01-0145-FEDER-000035) within the research line “INSEAFOOD - Innovation and valorization of seafood products: meeting local challenges and opportunities”, founded by the Northern ...