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Bioassays to assess the ecotoxicological impact of polyethylene microplastics and two organic pollutants, simazine and ibuprofen



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Martín, Carmen and Fajardo Martínez, Carmen María and Gonzalo, Costa and Sánchez-Fortún Rodríguez, Sebastián and San Andrés Larrea, María Dolores and Gonzalez Gomez, Fernando and Nande, Mar and Mengs, Gerardo and Martín Fernández, Margarita Carmen (2021) Bioassays to assess the ecotoxicological impact of polyethylene microplastics and two organic pollutants, simazine and ibuprofen. Chemosphere, 274 . p. 129704. ISSN 0045-6535, ESSN: 1879-1298

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Official URL: https://doi.org/10.1016/j.chemosphere.2021.129704


Research on the environmental impact of plastics, especially on the effect of microplastics (MPs), has become a priority issue in recent years, mainly in terrestrial ecosystems where there is a lack of studies. This work aims to assess the impact of two types of polyethylene MPs, white microbeads (W) and fluorescent blue microbeads (FB), and their interactions with two contaminants, ibuprofen (Ib) and simazine (Sz), on different organisms. A set of bioassays for Vibrio fischeri, Caenorhabditis elegans and Lactuca sativa was carried out, which helped to establish the ecotoxicological impact of those pollutants. C. elegans showed the least sensitivity, while V. fischeri and L. sativa showed a high toxicological response to MPs alone. We found that W and FB induced an inhibition of 27% and 5.79%, respectively, in V. fischeri, and the growth inhibition rates were near 70% in L. sativa for both MPs. MPs exhibited a potential role as contaminant vectors in V. fischeri since the inhibition caused by W-Ib or W-Sz complexes was near 39%. The W-Sz complex significantly reduced leaf development in L. sativa, and a reduction of 30% in seed germination was detected when the complex FB-Sz was tested. This study reveals the importance of designing a complete set of analyses with organisms from different trophic levels, considering the great variability in the effects of MPs and the high number of relevant factors.

Item Type:Article
Uncontrolled Keywords:Polyethylene microplastics, Ecotoxicological impacts, Vibrio fischeri, Caenorhabditis elegans, Lactuca sativa, Ibuprofen, Simazin
Subjects:Medical sciences > Veterinary
Medical sciences > Veterinary > Agriculture
Medical sciences > Biology
Medical sciences > Biology > Biochemistry
Medical sciences > Biology > Ecology
Medical sciences > Biology > Environment
Medical sciences > Biology > Microbiology
ID Code:75197
Deposited On:19 Oct 2022 18:27
Last Modified:20 Oct 2022 08:02

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