Distribution and ten-year temporal trends (2009–2018) of perfluoroalkyl substances in gull eggs from Spanish breeding colonies
Visualitza/Obre
Autor/a
Colomer-Vidal, Pere
Garreta-Lara, Elba
Santos, Francisco Javier
Lacorte, Silvia
Data de publicació
2021-11-19ISSN
0269-7491
Resum
Gull eggs are excellent bioindicators of environmental pollution as reflect the contamination levels of coastal areas, especially of persistent and bioacumulative compounds such as perfluoroalkyl substances (PFAS). This study aims to evaluate the geographical distribution and 10-year temporal trends (2009–2018) of 17 PFAS in eggs of two gull species (Larus michahellis and Larus audouinii) from 5 main Spanish colonies. ∑PFAS ranged from 13.7 ± 5.9 to 164 ± 17 ng g−1 wet weight and higher concentrations were observed in L. audouinii than in L. michahellis. Perfluorooctane sulfonate (PFOS) was the predominant compound in all samples, followed by perfluoroundecanoic acid (PFUnA) and perfluorotridecanoic acid (PFTriDA). Perfluorododecanoic acid (PFDoA), perfluorodecanoic acid (PFDA) and perfluorooctanoic acid (PFNA) were also found in all studied areas but at lower concentrations, while perfluorooctanoic acid (PFOA) was only detected in the Medes Islands. Principal Component Analysis revealed the co-occurrence of the 6 detected PFAS, and differentiated samples from Ebro Delta and Medes Islands, both located in the North-Eastern Mediterranean Sea, with high contribution of all PFAS, from Chafarinas and Atlantic Islands with lower concentration levels and variability. Also, different patterns were observed among colonies, suggesting the fish-based diet plays an important role in PFAS bioaccumulation. In all colonies, except for the Medes Islands, ∑PFAS decreased through the 10-year study period, with PFOS, PFUnA, and PFTriDA showing a significant concentration reduction in a colony-specific manner. This study demonstrates the usefulness and importance of continuous systematic long-term monitoring to determine the geographical distribution and temporal variations of PFAS in marine protected areas using gull eggs as bioindicators of environmental pollution.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
574 - Ecologia general i biodiversitat
Pàgines
11
Publicat per
Elsevier
Publicat a
Environmental Pollution
Citació
Colomer-Vidal, Pere, Albert Bertolero, Carles Alcaraz, Elba Garreta-Lara, Francisco Javier Santos, and Silvia Lacorte. 2022. "Distribution And Ten-Year Temporal Trends (2009–2018) Of Perfluoroalkyl Substances In Gull Eggs From Spanish Breeding Colonies". Environmental Pollution 293: 118555. doi:10.1016/j.envpol.2021.118555.
Número de l'acord de la subvenció
MICINN/Programa Estatal de generación del conocimiento y fortalecimiento científico y tecnológico del sistema I+D+I y Programa Estatal de I+D+I orientada a los retos de la sociedad/PID2019-105732GB-C21/ES/METODOLOGIAS ANALITICAS Y QUIMIOMETRICAS APLICADAS A QUIMICA AMBIENTAL/
Programa
Aigües Marines i Continentals
Aquest element apareix en la col·lecció o col·leccions següent(s)
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