Microplastic fibers influence Ag toxicity and bioaccumulation in Eisenia andrei but not in Enchytraeus crypticus.

Autor: Tourinho PS; Department of Environmental Chemistry, Faculty of Environmental Technology, University of Chemistry and Technology Prague, Prague, Czech Republic. dasilvap@vscht.cz., Loureiro S; CESAM & Department of Biology, University of Aveiro, Aveiro, Portugal., Talluri VSSLP; Department of Biotechnology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic., Dolar A; Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia., Verweij R; Department of Ecological Science, Faculty of Science, Vrije Universiteit, Amsterdam, The Netherlands., Chvojka J; Faculty of Textile Engineering, Technical University of Liberec, Liberec, Czech Republic., Michalcová A; Department of Metals and Corrosion Engineering, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic., Kočí V; Department of Environmental Chemistry, Faculty of Environmental Technology, University of Chemistry and Technology Prague, Prague, Czech Republic., van Gestel CAM; Department of Ecological Science, Faculty of Science, Vrije Universiteit, Amsterdam, The Netherlands.
Jazyk: angličtina
Zdroj: Ecotoxicology (London, England) [Ecotoxicology] 2021 Aug; Vol. 30 (6), pp. 1216-1226. Date of Electronic Publication: 2021 May 27.
DOI: 10.1007/s10646-021-02424-3
Abstrakt: Microplastic fibers (MF) are released from synthetic textiles during washing and end up in the wastewater. Similarly, silver nanoparticles (AgNP), incorporated in textiles as antimicrobial agents, are released in washing machines, also reaching the wastewater treatment plants. Therefore, both MF and AgNP co-exist in the environment and enter the soil compartment mainly via the application of biosolids. Yet, the combined effect of MF and AgNP has not been studied. Here, we assessed the effects of polyester MF on the toxicity of AgNP and AgNO 3 to the earthworm Eisenia andrei and the enchytraeid Enchytraeus crypticus. The organisms were exposed to a range of concentration of AgNP (32, 100, 320, 1000, 3200 mg Ag/kg) and AgNO 3 (12.8, 32, 80, 200, 500 mg Ag/kg) in LUFA 2.2 soil in the absence or presence of MF (0.01% DW). Reproduction tests were conducted and the toxicity outcomes compared between soils with and without MF. The exposure to MF caused a decrease in the number of juveniles and changed the biochemical composition of earthworms. Moreover, the presence of MF increased the toxicity of AgNP to earthworm reproduction (EC50 = 165 mg Ag/kg) when compared to AgNP exposure alone (EC50 = 450 mg Ag/kg), but did not alter the toxicity of AgNO 3 (EC50 = 40 mg Ag/kg). For enchytraeids, no significant difference in Ag toxicity could be detected when MF was added to the soil for both AgNP and AgNO 3 . Overall, Ag bioaccumulation was not affected by MF, except for a decrease in earthworm body concentration at the highest Ag soil concentration (3200 mg Ag/kg). Our results suggest that the presence of MF in the soil compartment may be a cause of concern, and that the joint exposure to Ag may be deleterious depending on the Ag form, organism, and endpoint. The present work provides the first evidence that a realistic MF concentration in soil lowers AgNP concentration necessary to provoke reproductive impairment in earthworms. The influence of MF on the risk assessment of AgNP should be considered.
(© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
Externí odkaz: