File:NanoplasticsActicAntarctic2022.jpg

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nanoplastics of different types in the water sampled from a Greenland firn core (T2015-A5) and a sea ice core from Antarctica.

Summary[edit]

Description
Français : Une étude récente (2022) a étudié des échantillons de glace collectés au-delà du cercle polaire sud et nord : le nanoplastique le plus fréquent était le PE (> 50 % du total).
  • Au Groenland, en moyenne 13,2 ng/mL de nanoplastiques ont été trouvés dans une carotte, avec jusqu'à 14 m de profondeur dans un névé des nanofragments de polyéthylène (PE), de polypropylène (PP), de polyéthylène téréphtalate (PET), de polystyrène (PS), de chlorure de polyvinyle (PVC) et des nanoparticules provenant de l'usure des pneus
  • La banquise antarctique n'est pas épargnée avec en moyenne 52,3 ng/mL de nanoplastiques (PE, PP et PET) trouvés dans un échantillon de glace de mer analysé. Les résidus d'usure des pneus sont plus rares au sud, alors qu'ils sont dominant dans l'Arctique
en savoir plus : https://www.sciencedirect.com/science/article/pii/S0013935122000688
English: In this work, we used a novel method based on Thermal Desorption – Proton Transfer Reaction – Mass Spectrometry (TD-PTR-MS) to detect and measure nanoplastics of different types in the water sampled from a Greenland firn core (T2015-A5) and a sea ice core from Antarctica. We identify polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), and Tire wear nanoparticles in the 14 m deep Greenland firn core and PE, PP and PET in sea ice from Antarctica. Nanoplastics mass concentrations were on average 13.2 ng/mL for Greenland firn samples and 52.3 ng/mL for Antarctic sea ice.
Date
Source Dušan Materić, Helle Astrid Kjær, Paul Vallelonga et Jean-Louis Tison, « Nanoplastics measurements in Northern and Southern polar ice », Environmental Research, vol. 208,‎ mai 2022, p. 112741 (DOI 10.1016/j.envres.2022.112741, URL : https://www.sciencedirect.com/science/article/pii/S0013935122000688 Open access cc-by-sa 4.0 : https://creativecommons.org/licenses/by/4.0/
Author Dušan Materić, Helle Astrid Kjær, Paul Vallelonga et Jean-Louis Tison,

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