Adsorption of Pesticides and Personal Care Products on Pristine and Weathered Microplastics in the Marine Environment. Comparison Between Bio-Based and Conventional Plastics
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Adsorption of Pesticides and Personal Care Products on Pristine and Weathered Microplastics in the Marine Environment. Comparison Between Bio-Based and Conventional PlasticsData
2022Cita bibliográfica
Estefanía Concha-Graña, Carmen Mª. Moscoso-Pérez, Purificación López-Mahía, Soledad Muniategui-Lorenzo (2022). Adsorption of pesticides and personal care products on pristine and weathered microplastics in the marine environment. Comparison between bio-based and conventional plastics. Science of The Total Environment, Volume 848, 157703. ISSN 0048-9697. https://doi.org/10.1016/j.scitotenv.2022.157703. (https://www.sciencedirect.com/science/article/pii/S0048969722048021)
Resumo
[Abstract] The hydrophobicity of persistent organic pollutants (POPs) makes them adsorb on microplastics in the marine environment, affecting their distribution, persistence, or their transfer to the trophic chain. Fragrances and non-polar pesticides can be adsorbed by microplastics in the marine environment because of their physico-chemical characteristics. In this work, the adsorption of two pesticides (α-endosulfan and chlorpyrifos) and 6 musk fragrances (musk xylene, musk ketone, musk moskene, galaxolide, tonalide, and celestolide) on polyamide (PA6) (a petroleum based polymer) and on polyhydroxybutyrate (PHB) (biopolymer) in seawater was studied, considering also the effect of water temperature and plastic weathering. Results show higher adsorption of the selected pollutants for PHB than PA, being PA more affected by the water temperature and the plastic weathering. The highest percentage of adsorption was achieved in most cases at 24 h. In addition, this process was irreversible, as it showed the leaching assays. Besides, this work revealed that plastics mitigate the degradation of α-endosulfan in aquatic media (hydrolysis), showing that plastics can act as inhibitors of degradation of POPs, increasing its persistence in the environment.
Palabras chave
Polyamide
Polyhydroxybutyrate
Sorption
Leaching
Musk fragrances
Pesticides
Polyhydroxybutyrate
Sorption
Leaching
Musk fragrances
Pesticides
Descrición
Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG
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Dereitos
Atribución 4.0 Internacional (CC BY 4.0)
ISSN
0048-9697