Analyse de polluants marins : nanoplastiques, modèles et développement analytique

par Lucile Marigliano

Projet de thèse en Chimie Analytique et environnement

Sous la direction de Bruno Grassl.

Thèses en préparation à Pau , dans le cadre de ECOLE DOCTORALE SCIENCES EXACTES ET LEURS APPLICATIONS (PAU, PYRENEES ATLANTIQUES) , en partenariat avec INSTITUT DES SCIENCES ANALYTIQUES ET DE PHYSICO-CHIMIE POUR L'ENVIRONNEMENT ET LES MATERIAUX (IPREM UMR 5254) (laboratoire) .


  • Résumé

    Through accidental release and indescriminate discards, plastic wastes have accumulated in the environment at an uncontrollable rate. Not only is the toxicity of nanoplastics (NPs) of major concern, but also NPs associated-toxicants. Recent studies of the size distribution of the plastic debris suggested that continued fragmenting of microplastics into nanosized particles may occur. At the same time, plastic particles uptakes by marine organisms are inversely related to particle size. Indeed, persistent toxic contaminants associated with NPs may firstly originate from the pellet formulation, because varous kind of additives are used during the manufacturing of plastics to increase its durability. Furthermore, due to their large surface-to-volume ratio, NPs may adsorb larger amount of external toxic compounds than microplastics. Our objective is to develop a new approch based on NP models to environmental sample for a better understanding of the physico-chemical behavior via coupled analytical methods based on mass spectrometry (spICP-MS, A4F-MALLS-ICP-MS).

  • Titre traduit

    Marine sorbed debris analysis : nanoplastics, models and analytical method development


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