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<p>This study characterizes anthropogenic particles (AP) and microplastics (MP) in treated wastewater, sea surface, water column and intertidal sediments from the Arcachon Bay (France) at four seasons. Their morphometric characteristics, polymer types and concentrations were described. Concentrations showed some seasonal variations that may be related to anthropogenic factors like tourism or fishing. Overall, 2687.4 ± 1335.2 AP.m<sup>−3</sup> (614.7 ± 481.4 MP.m<sup>−3</sup>) were found in wastewater and we estimated that 127.4 ± 41.6 million of AP (30.0 ± 25.2 million of MP) could enter the Atlantic Ocean each day via the wastewater system. Mean concentrations at sea surface, in water column and intertidal sediments were respectively 0.79 ± 1.64 AP.m<sup>−3</sup> (0.62 ± 1.30 MP.m<sup>−3</sup>), 778.90 ± 370.95 AP.m<sup>−3</sup> (319.2 ± 214.6 MP.m<sup>−3</sup>) and 86.93 ± 67.77 AP.kg<sup>−1</sup> (16.1 ± 19.1 MP.kg<sup>−1</sup> dry weight). Finally, we proposed insights about sources of AP and MP based on their characteristics (e.g. textiles, tyres, fishing).</p>

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Temporal Distribution of Microplastics and other Anthropogenic Particles in Abiotic Compartments of a Coastal Lagoon from the Atlantic Coast

  • 期刊论文

  • 发表日期：

    2025年4月16日

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  • Charlotte Lefebvre,
  • Florane Le Bihanic,
  • Lucas Chassaigne–Viscaïno,
  • Yann Combes,
  • Tara Loisel,
  • Camille Llech,
  • Bénédicte Morin,
  • Jérôme Cachot,
  • Sophie Lecomte

摘要

This study characterizes anthropogenic particles (AP) and microplastics (MP) in treated wastewater, sea surface, water column and intertidal sediments from the Arcachon Bay (France) at four seasons. Their morphometric characteristics, polymer types and concentrations were described. Concentrations showed some seasonal variations that may be related to anthropogenic factors like tourism or fishing. Overall, 2687.4 ± 1335.2 AP.m−3 (614.7 ± 481.4 MP.m−3) were found in wastewater and we estimated that 127.4 ± 41.6 million of AP (30.0 ± 25.2 million of MP) could enter the Atlantic Ocean each day via the wastewater system. Mean concentrations at sea surface, in water column and intertidal sediments were respectively 0.79 ± 1.64 AP.m−3 (0.62 ± 1.30 MP.m−3), 778.90 ± 370.95 AP.m−3 (319.2 ± 214.6 MP.m−3) and 86.93 ± 67.77 AP.kg−1 (16.1 ± 19.1 MP.kg−1 dry weight). Finally, we proposed insights about sources of AP and MP based on their characteristics (e.g. textiles, tyres, fishing).