Chemical composition and particle size influence the toxicity of nanoscale plastic debris and their co-occurring benzo(α)pyrene in the model aquatic organisms Daphnia magna and Danio rerio
Monikh, F. A., Durão, M., Kipriianov, P. V., Huuskonen, H., Kekäläinen, J., Uusi-Heikkilä, S., Uurasjärvi, E., Akkanen, J., & Kortet, R. (2022). Chemical composition and particle size influence the toxicity of nanoscale plastic debris and their co-occurring benzo(α)pyrene in the model aquatic organisms Daphnia magna and Danio rerio. NanoImpact, 25, Article 100382. https://doi.org/10.1016/j.impact.2022.100382
© 2022 The Author(s). Published by Elsevier B.V.
Little is known about how particle chemical composition and size might influence the toxicity of nanoscale plastic debris (NPD) and their co-occurring chemicals. Herein, we investigate the toxicity of 3 × 1010 particles/L polyethylene (PE, 50 nm), polypropylene (PP, 50 nm), polystyrene (PS, 200 and 600 nm), and polyvinyl chloride (PVC, 200 nm) NPD and their co-occurring benzo(a)pyrene (BaP) to Daphnia magna and Danio rerio. During the 21 days of exposure to PE 50 nm and PS 200 nm, the number of broods produced by D. magna decreased compared to other treatments. Exposure to BaP alone did not produce any effects on the reproduction of the daphnids, however, the mixture of BaP with PS (200 or 600 nm) or with PE (50 nm) reduced the number of broods. Exposure of D. rerio embryos to PE 50 nm, PS 200 nm, and PS 600 nm led to a delay in the hatching. The presence of PS 200 nm and PVC 200 nm eliminated the effects of BaP on the hatching rate of zebrafish. Our findings suggest that data generated for the toxicity of one type of NPD, e.g. PVC or PS may not be extrapolated to other types of NPD. ...
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Related funder(s)Research Council of Finland
Funding program(s)Academy Research Fellow, AoF
Additional information about fundingThis work was funded by the University of Eastern Finland water research program funded by the Saastamoinen Foundation, the Wihuri Foundation, the Olvi Foundation, and the Academy of Finland (JK: #308485; SUH: #325107). The study was also supported by the Nordic Centre of Excellence for Sustainable and Resilient Aquatic Production, SUREAQUA.
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