Organophosphate ester additives and microplastics in benthic compartments from the Loire estuary (French Atlantic coast).

Autor: Castro-Jiménez J; IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, F-44000 Nantes, France. Electronic address: Javier.Castro.Jimenez@ifremer.fr., Aminot Y; IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, F-44000 Nantes, France., Bely N; IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, F-44000 Nantes, France., Pollono C; IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, F-44000 Nantes, France., Idjaton BIT; IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, F-44000 Nantes, France., Bizzozero L; IFREMER, LITTORAL, F-44300 Nantes, France., Pierre-Duplessix O; IFREMER, LITTORAL, F-44300 Nantes, France., Phuong NN; Univ Gustave Eiffel, GERS-LEE, F-44344 Bouguenais, France., Gasperi J; Univ Gustave Eiffel, GERS-LEE, F-44344 Bouguenais, France.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Apr; Vol. 201, pp. 116256. Date of Electronic Publication: 2024 Mar 22.
DOI: 10.1016/j.marpolbul.2024.116256
Abstrakt: We report the first empirical confirmation of the co-occurrence of organophosphate esters (OPEs) additives and microplastics (MPs) in benthic compartments from the Loire estuary. Higher median concentrations of MPs (3387 items/kg dw), ∑ 13 tri-OPEs (12.0 ng/g dw) and ∑ 4 di-OPEs (0.7 ng/g dw) were measured in intertidal sediments with predominance of fine particles, and under higher anthropogenic pressures, with a general lack of seasonality. Contrarily, Scrobicularia plana showed up to 4-fold higher ∑tri-OPE concentrations in summer (reaching 37.0 ng/g dw), and similar spatial distribution. Polyethylene predominated in both compartments. Tris(2-ethylhexyl) phosphate (TEHP), its degradation metabolite (BEHP) and tris-(2-chloro, 1-methylethyl) phosphate (TCIPP) were the most abundant OPEs in sediments, while TCIPP predominated in S. plana. The biota-sediment accumulation factors suggest bioaccumulation potential for chlorinated-OPEs, with higher exposure in summer. No significant correlations were generally found between OPEs and MPs in sediments suggesting a limited role of MPs as in-situ source of OPEs.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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