CORMIER, Bettie; BORCHET, Flora; KARRMAN, Anna; SZOT, Marta; YEUNG, Leo W. Y.; KEITER, Steffen H.

doi:10.1007/s11356-021-15923-x

Environnements et Paléoenvironnements OCéaniques [EPOC]

BORCHET, Flora

KARRMAN, Anna

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Article de revue

Ce document a été publié dans

Environmental Science and Pollution Research. 2021-08-18, vol. 29, n° 3, p. 4497-4507

Résumé en anglais

The sorption processes of persistent organic pollutants on microplastics particles are poorly understood. Therefore, the present study investigated the sorption processes of perfluorooctanesulfonate (PFOS) on polyethylene (PE) microplastic particles (MPs) which are representing a prominent environmental pollutant and one of the most abundant microplastic polymers in the aquatic environment, respectively. The focus was set on the investigation of the impact of the particle size on PFOS sorption using four different PE MPs size ranges. The sorption kinetics for 6 months was studied with one selected size range of PE MPs. Besides, the desorption of PFOS from PE MPs under simulated digestive conditions was carried out by using artificial gut fluid mimicking the intestinal juice of fish. The investigation of the size effects of particles over 6 months demonstrated a linear increase of PFOS concentration sorbed onto PE with a decrease of the particle size. Thus, our findings implicate efficient sorption of PFOS onto PE MPs of different sizes. The results showed that PFOS desorbed from the PE MPs into the artificial gut fluid with a rate of 70 to 80%. Besides, a longer exposure of PE MPs to PFOS leads to a higher concentration adsorbed by PE MPs, which may favor the ingestion of higher concentration of PFOS, and thus represents a higher risk to transfer relevant concentrations of PFOS during digestion.< Réduire

Mots clés en anglais

Microplastics

Polyethylene

Sorption

PFOS

URI

https://oskar-bordeaux.fr/handle/20.500.12278/184610

DOI

http://dx.doi.org/10.1007/s11356-021-15923-x

Unités de recherche

EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805

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Sorption and desorption kinetics of PFOS to pristine microplastic

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Résumé en anglais

Mots clés en anglais

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