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Seasonal and Spatial Comparison of Polycyclic Aromatic Hydrocarbons Among Decapod Shrimp from Coastal Portugal

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Abstract

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous global pollutants that are lipophilic, bioaccumulative and can be both endocrine disruptors and carcinogens. In this study, we measured 18 PAHs among decapod shrimp samples (Palaemon spp.) collected during the spring and autumn from multiple locations along the Portuguese coastal, including local markets and aquaculture farms. ΣPAH concentrations in samples ranged from 3.14 to 320.48 ng/g (ww) with the highest value in this range detected in a sample provided from an aquaculture facility. Fifteen of the 18 scanned PAHs were present in shrimp samples. However, detectable concentrations (0.07 ng/g ww) of the carcinogenic benzo-a-pyrene occurred for a single sample only and approached method detection limits. No significant differences in shrimp ΣPAH concentrations were evident between the spring and autumn seasons. Target hazard quotient estimation suggested low probability of adverse health effects to consumers through consumption of shrimp from the study collection locations.

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Acknowledgements

This work was financially supported by Portuguese national funds through projects UIDB/50006/2020, UIDP/50006/2020, and LA/P/0008/2020, from the Fundação para a Ciência e a Tecnologia (FCT)/Ministério da Ciência, Tecnologia e Ensino Superior (MCTES). The authors also thank FCT and the European Union’s H2020 Research and Innovation Programme for funding through the project Systemic-An integrated approach to the challenge of sustainable food systems: adaptive and mitigatory strategies to address climate change and malnutrition. Maria Luz Maia is grateful to FCT and ESF (European Social Fund) through POCH (Programa Operacional Capital Humano) for the PhD grant SFRH/BD/128817/2017 and COVID/BD/151852/2022.

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MLM: investigation, formal analysis, visualization and writing—original draft; PP: investigation and formal analysis; MJR: methodology; supervision; validation and writing—review and editing; CDM: resources and writing—review and editing; VFD: supervision; validation and writing—review and editing; CC: validation and writing—review and editing.

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Correspondence to Valentina Fernandes Domingues.

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Maia, M.L., Paíga, P., Ramalhosa, M.J. et al. Seasonal and Spatial Comparison of Polycyclic Aromatic Hydrocarbons Among Decapod Shrimp from Coastal Portugal. Bull Environ Contam Toxicol 109, 511–517 (2022). https://doi.org/10.1007/s00128-022-03562-y

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  • DOI: https://doi.org/10.1007/s00128-022-03562-y

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