0
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Microstructure Characterization of Oceanic Polyethylene Debris.

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Plastic pollution has become a worldwide concern. It was demonstrated that plastic breaks down to nanoscale particles in the environment, forming so-called nanoplastics. It is important to understand their ecological impact, but their structure is not elucidated. In this original work, we characterize the microstructure of oceanic polyethylene debris and compare it to the nonweathered objects. Cross sections are analyzed by several emergent mapping techniques. We highlight deep modifications of the debris within a layer a few hundred micrometers thick. The most intense modifications are macromolecule oxidation and a considerable decrease in the molecular weight. The adsorption of organic pollutants and trace metals is also confined to this outer layer. Fragmentation of the oxidized layer of the plastic debris is the most likely source of nanoplastics. Consequently the nanoplastic chemical nature differs greatly from plastics.

          Related collections

          Author and article information

          Journal
          Environ Sci Technol
          Environmental science & technology
          American Chemical Society (ACS)
          1520-5851
          0013-936X
          April 07 2020
          : 54
          : 7
          Affiliations
          [1 ] Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, Cedex 9, France.
          [2 ] Laboratoire de Chimie Physique (LCP), CNRS UMR 8000, Univ of Paris-Sud, Université Paris-Saclay, Orsay, 91405, France.
          [3 ] IPANEMA, CNRS, Ministère de la Culture, UVSQ, USR3461, Université Paris-Saclay, F-91192 Gif-sur-Yvette, France.
          [4 ] CMEAB, IFRBMT, Université de Toulouse, 133 route de Narbonne, Toulouse, 31062, France.
          [5 ] Aix Marseille Univ, CNRS, LCE, Marseille, 13545, France.
          [6 ] Université de Lyon, CPE Lyon, CNRS, UMR 5265, Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2), Villeurbanne, 69100, France.
          [7 ] Laboratoire Charles Coulomb (L2C), Univ Montpellier, CNRS, Montpellier, 34095, France.
          Article
          10.1021/acs.est.9b07061
          32150389
          be43f5f6-28f4-4d7e-929f-173c1fac5120

          Comments

          Comment on this article