Organophosphate ester additives and microplastics in benthic compartments from the Loire estuary (French Atlantic coast)
Type | Article | ||||||||||||
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Date | 2024-04 | ||||||||||||
Language | English | ||||||||||||
Author(s) | Castro-Jiménez Javier1, Aminot Yann1, Bely Nadege1, Pollono Charles1, Idjaton B.I.T.1, Bizzozero Lucie2, Pierre-Duplessix Olivier2, Phuong N.N.3, Gasperi J.3 | ||||||||||||
Affiliation(s) | 1 : IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, F-44000 Nantes, France 2 : IFREMER, LITTORAL, F-44300 Nantes, France 3 : Univ Gustave Eiffel, GERS-LEE, F-44344 Bouguenais, France |
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Source | Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2024-04 , Vol. 201 , P. 116256 (11p.) | ||||||||||||
DOI | 10.1016/j.marpolbul.2024.116256 | ||||||||||||
Keyword(s) | Organophosphorus flame retardants, Plasticizers, Sediments, Bioaccumulation, BSAF, Scrobicularia plana | ||||||||||||
Abstract | 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), ∑13tri-OPEs (12.0 ng/g dw) and ∑4di-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. |
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