| Autor: |
Hermabessiere, Ludovic, Paul-Pont, Ika, Cassone, Anne-Laure, Himber, Charlotte, Receveur, Justine, Jezequel, Ronan, El Rakwe, Maria, Rinnert, Emmanuel, Rivière, Gilles, Lambert, Christophe, Huvet, Arnaud, Dehaut, Alexandre, Duflos, Guillaume, Soudant, Philippe |
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| Zdroj: |
Environmental Pollution; Jul2019, Vol. 250, p807-819, 13p |
| Abstrakt: |
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 μ-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 ± 0.35 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. Image 1 • Quantification of MP and additives in two commercial bivalve species. • First study measuring MP contamination in the common cockle. • Proportion of contaminated bivalves by MP is up to 58% along the Channel. • No relationship between MP and HOC/plastic additive concentrations was found. Microplastic contamination and pollutant levels of commercially important bivalves in France. [ABSTRACT FROM AUTHOR] |
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