abstract
In the last few years the use of nanoparticles (NPs) such as the manganese spinel ferrite (MnFe2O4) has been increasing, with a vast variety of applications including water remediation from pollutants as metal(oid)s. Although an increasing number of studies already demonstrated the potential toxicity of NPs towards aquatic systems and inhabiting organisms, there is still scarce information on the potential hazard of the remediated water using NPs. The present study aimed to evaluate the ecotoxicological safety of Pb contaminated seawater remediated with MnFe2O4, NPs, assessing the toxicity induced in mussels Mytilus galloprovincialis exposed to contaminated seawater and to water that was remediated using MnFe2O4, NPs. The results obtained demonstrated that seawater contaminated with Pb, NPs or the mixture of both (Pb + NPs) induced higher toxicity in mussels compared to organisms exposed to Pb, NPs and Pb + NPs after the remediation process. In particular, higher metabolic depression, oxidative stress and neurotoxicity were observed in mussels exposed to contaminated seawater in comparison to mussels exposed to remediated seawater. (C) 2020 Elsevier B.V. All rights reserved.
keywords
TITANIUM-DIOXIDE NANOPARTICLES; METAL-OXIDE NANOPARTICLES; WALLED CARBON NANOTUBES; MYTILUS-GALLOPROVINCIALIS; OXIDATIVE STRESS; MAGNETIC-PROPERTIES; CRASSOSTREA-GIGAS; ARSENIC REMOVAL; PACIFIC OYSTER; DAPHNIA-MAGNA
subject category
Environmental Sciences & Ecology
authors
Coppola, F; Tavares, DS; Henriques, B; Monteiro, R; Trindade, T; Figueira, E; Soares, AMVM; Pereira, E; Freitas, R
our authors
Tito Trindade
Full professoracknowledgements
Francesca Coppola, Daniela S. Travers and Rui Monteiro benefited from PhD grants (SFRH/BD/118582/2016, SFRH/BD/103828/2014 and SFRH/BD/108535/2015, respectively) given by the National Funds through the Portuguese Science Foundation (FCT), supported by FSE and Programa Operacional Capital Humano (POCH) e da Uniao Europeia. Bruno Henriques and Rosa Freitas benefited from a Research position funded by national funds (OE), through FCT -Fundacao para a Ciencia e a Tecnologia, I.P., in the scope of the framework contract foreseen in the numbers 4, 5 and 6 of the article 23, of the Decree-Law 57/2016, of August 29, changed by Law 57/2017, of July 19. Thanks are due for the financial support to CESAM (UIDB/50017/2020+UIDP/50017/2020), to FCT/MEC through national funds, and the co-funding by the FEDER, within the PT2020 Partnership Agreement and Compete 2020. Thisworkwas also financially supported by the project BISPECIAl: BIvalveS under Polluted Environment and ClImate chAnge (POCI-010145-FEDER-028425) funded by FEDER, through COMPETE2020 Programa Operacional Competitividade e Internacionalizacao (POCI), and by national funds (OE), through FCT/MCTES.