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Article Dans Une Revue Environmental Pollution Année : 2019

Microplastic contamination and pollutant levels in mussels and cockles collected along the channel coasts

Gilles Rivière

Résumé

Nowadays, environmental pollution by microplastics (<5 mm; MP) is a major issue. MP are contaminating marine organisms consumed by humans. This work studied MP contamination in two bivalve species of commercial interest: blue mussel (Mytilus edulis) and common cockle (Cerastoderma edule) sampled on the Channel coastlines (France). In parallel, 13 plastic additives and 27 hydrophobic organic compounds (HOC) were quantified in bivalves flesh using SBSE-TD-GS-MS/MS to explore a possible relationship between their concentrations and MP contamination levels. MP were extracted using a 10% potassium hydroxide digestion method then identified by mu-Raman spectroscopy. The proportion of contaminated bivalves by MP ranged from 34 to 58%. Blue mussels and common cockles exhibited 0.76 +/- 0.40 and 2.46 +/- 1.16 MP/individual and between 0.15 +/- 0.06 and 0.74 +/- 035 MP/g of tissue wet weight. Some HOC and plastic additives were detected in bivalves. However, no significant Pearson or Spearman correlation was found between MP loads and plastic additives or HOC concentrations in bivalve tissues for the two species.
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Dates et versions

hal-02373658 , version 1 (16-06-2021)

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Ludovic Hermabessiere, Ika Paul-Pont, Anne-Laure Cassone, Charlotte Himber, Justine Receveur, et al.. Microplastic contamination and pollutant levels in mussels and cockles collected along the channel coasts. Environmental Pollution, 2019, 250, pp.807-819. ⟨10.1016/j.envpol.2019.04.051⟩. ⟨hal-02373658⟩
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