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Fate of pristine TiO2 nanoparticles and aged paint-containing TiO2 nanoparticles in lettuce crop after foliar exposure

hal.structure.identifierInstitut des Sciences de la Terre [ISTerre]
dc.contributor.authorLARUE, Camille
hal.structure.identifierID21
dc.contributor.authorCASTILLO-MICHEL, Hiram
hal.structure.identifierLaboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
dc.contributor.authorSOBANSKA, Sophie
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorTRCERA, Nicolas
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSORIEUL, Stéphanie
hal.structure.identifierInstitut des Sciences de la Terre [ISTerre]
dc.contributor.authorCÉCILLON, Lauric
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
dc.contributor.authorOUERDANE, Laurent
hal.structure.identifierCentre européen de recherche et d'enseignement des géosciences de l'environnement [CEREGE]
dc.contributor.authorLEGROS, Samuel
hal.structure.identifierInstitut des Sciences de la Terre [ISTerre]
dc.contributor.authorSARRET, Géraldine
dc.date.issued2014-05
dc.identifier.issn0304-3894
dc.description.abstractEnEngineered TiO2 nanoparticles (TiO2-NPs) are present in a large variety of consumer products, and are produced in largest amount. The building industry is a major sector using TiO2-NPs, especially in paints. The fate of NPs after their release in the environment is still largely unknown, and their possible transfer in plants and subsequent impacts have not been studied in detail. The foliar transfer pathway is even less understood than the root pathway. In this study, lettuces were exposed to pristine TiO2-NPs and aged paint leachate containing TiO2-NPs and microparticles (TiO2-MPs). Internalization and in situ speciation of Ti were investigated by a combination of microscopic and spectroscopic techniques. Not only TiO2-NPs pristine and from aged paints, but also TiO2-MPs were internalized in lettuce leaves, and observed in all types of tissues. No change in speciation was noticed, but an organic coating of TiO2-NPs is likely. Phytotoxicity markers were tested for plants exposed to pristine TiO2-NPs. No acute phytotoxicity was observed; variations were only observed in glutathione and phytochelatin levels but remained low as compared to typical values. These results obtained on the foliar uptake mechanisms of nano- and microparticles are important in the perspective of risk assessment of atmospheric contaminations.
dc.language.isoen
dc.publisherElsevier
dc.title.enFate of pristine TiO2 nanoparticles and aged paint-containing TiO2 nanoparticles in lettuce crop after foliar exposure
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jhazmat.2014.03.014
dc.subject.halSciences de l'environnement
dc.description.sponsorshipEuropeLife Cycle of Nanoparticle-based Products used in House Coating
bordeaux.journalJournal of Hazardous Materials
bordeaux.page17-26
bordeaux.volume273
bordeaux.peerReviewedoui
hal.identifierhal-02325207
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.esEcotoxicology Plant TiO 2 nanoparticle Micro-XRF Micro-XAS
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02325207v1
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