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Toxicity of aged and unaged conventional or biodegradable mulching films microplastics to the estuarine bivalve Scrobicularia plana

Zenodo (CERN European Organization for Nuclear Research) 2024
Clémentine Labbé, Isabelle Métais, Oïhana Latchere, Hanane Perrein-Ettajani, Mohammed Mouloud, Antoine Le Guernic, Nicolas Manier, Amélie Châtel, Amélie Châtel

Summary

Researchers tested the toxicity of aged and unaged microplastics from both conventional and biodegradable mulch films on soil organisms under realistic agricultural exposure conditions. Aged mulch film microplastics were more toxic than virgin particles, and biodegradable alternatives were not inherently less harmful to soil biota.

Polymers
PE PLA

Human activities, and more specifically agricultural and horticultural activities, generate plastic pollution of soils, particularly by microplastics (MP). This pollution by MP is now ubiquitous and raises the question of its impact on the health of ecosystems in different compartments along the soil/aquatic continuum. The objective of this study is to assess the impact of aging on the toxicity of conventional (Polyethylene, PE) and biodegradable (Polylactic Acid/Polybutylene Adipate Terephthalate, PLA/PBAT) mulching films microplastics on a key organism of the estuarine compartment, an environment at the soil/water interface. The estuarine bivalve Scrobicularia plana was exposed for 21 days to two environmental concentrations (0.008µg/L and 100µg/L) of microplastics ( Also see: https://micro2024.sciencesconf.org/558522/document

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