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Occurrence and identification of microplastics in beach sediments from the Hauts-de-France region
2019
Doyen, Périne | Hermabessiere, Ludovic | Dehaut, Alexandre | Himber, Charlotte | Decodts, Marion | Degraeve, Thiefaine | Delord, Léna | Gaboriaud, Marie | Moné, Pauline | Sacco, Jade | Tavernier, Eric | Grard, Thierry | Duflos, Guillaume | Institut Charles Viollette (ICV) - ULR 7394 (ICV) ; Université d'Artois (UA)-Université du Littoral Côte d'Opale (ULCO)-Institut Supérieur d'Agriculture-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Departement Génie Biologique, IUT Calais-Boulogne ; Université du Littoral Côte d'Opale (ULCO) | Biochimie des Produits Aquatiques (BPA) ; Université du Littoral Côte d'Opale (ULCO)-Transfrontalière BioEcoAgro - UMR 1158 (BioEcoAgro) ; Université d'Artois (UA)-Université de Liège-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-JUNIA (JUNIA) ; Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Université d'Artois (UA)-Université de Liège-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-JUNIA (JUNIA) ; Université catholique de Lille (UCL)-Université catholique de Lille (UCL) | Laboratoire de sécurité des aliments de Maisons-Alfort (LSAl) ; Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES) | Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) ; Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Nord]) | Région Hauts-de-France | Anses | CPER 2014-2020 MARCO | CPER 2014-2020 MARCO
International audience | The present work was carried out to quantify microplastics (MP) from three sandy beaches along the Côte d’Opale coastline located in the Hauts-de-France region of northern France. Three different study sites located along the English Channel were investigated due to different levels of anthropopression and hydrodynamic conditions. Sediments were collected at three different tide lines: high tide line (HTL), middle of the intertidal zone (IZ), and low tide line (LTL), to investigate the effects of tide line on microplastic contamination. Particles and fibers were counted and colors were recorded; polymer identification was then performed using pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS). Particle and fiber abundances ranged from 23.4 ± 18.9 to 69.3 ± 30.6 items kg−1 dry weight sediment, with a trend towards fiber predominance, were observed. No difference in particle and fiber abundance was found between the different beaches and tide lines, except for Boulogne-sur-Mer, where the particle number was significantly different between tide lines. Major polymers identified were polyethylene (36.6%) and polypropylene (10.7%). This citizen science project provided preliminary data about the abundance and polymeric nature of MP along the Côte d’Opale coastline.
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