Title :

Vertical distribution of microplastics in a river water column using an innovative sampling method

Author(s) :

Pasquier, Gabriel [Auteur correspondant]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Université du Littoral Côte d'Opale [ULCO]
Dehaut, Alexandre [Auteur]
Laboratoire de Boulogne-sur-Mer
Veillet, Guillaume [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Université du Littoral Côte d'Opale [ULCO]
Duflos, Guillaume [Auteur]
Laboratoire de Boulogne-sur-Mer
Laboratoire de sécurité des aliments de Maisons-Alfort [LSAl]
Doyen, Périne [Auteur]
BioEcoAgro - Equipe 8 - Food and Digestive Microbial Ecosystems: Interactions - Dynamics - Application(s)
Université du Littoral Côte d'Opale [ULCO]
BioEcoAgro - UMR transfrontalière INRAe - UMRT1158
Amara, Rachid [Auteur]
Université du Littoral Côte d'Opale [ULCO]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]

Journal title :

Environmental Monitoring and Assessment

Pages :

1302

Publisher :

Springer

Publication date :

2023-11

ISSN :

0167-6369

English keyword(s) :

Microplastics
Distribution
Water column
Weather conditions

HAL domain(s) :

Sciences de l'environnement/Milieux et Changements globaux

English abstract : [en]

Due to limitations of sampling methods, subsurface water is usually a less well-investigated compartment of the water column when scientists assess microplastic contamination. In this study, microplastic (MP) contamination ...
Show more >Due to limitations of sampling methods, subsurface water is usually a less well-investigated compartment of the water column when scientists assess microplastic contamination. In this study, microplastic (MP) contamination was assessed in a freshwater river both in surface and subsurface using an innovative sampling method. Microplastic contamination in the lower part of the water column, i.e., near-bottom water and in sediments, was also studied. Three sampling campaigns were carried out during different weather conditions: stormy, rainy, and dry in order to observe their influence on the microplastics vertical distribution. No significant difference was observed between the abundance and types of MPs in surface and subsurface water. The proportion of polymer with theoretical density < 1 (polypropylene d = 0.9, polyethylene d = 0.91-0.95) and polystyrene (d = 0.1-1.06) in the surface and subsurface samples was 73.5%, and this proportion drops to 40.8% for the samples located in the near-bottom water and the sediments. Our results indicate that the MP concentration of the different compartments analyzed can be significantly influenced by rainfall during and prior to the sampling day. This study highlights that in shallow rivers, surface water sampling is representative of the water column MP contamination, but that sampling without taking environmental conditions into account may lead to erroneous estimation of MPs concentration and flux entering the marine environment.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Transdisciplinary graduate school for marIne, Fisheries and SEAfood sciences

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL