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dc.contributor.authorSekine, Ryo
dc.contributor.authorKhurana, Kanupriya
dc.contributor.authorVasilev, Krasimir
dc.contributor.authorLombi, Enzo
dc.contributor.authorDonner, Erica
dc.date.accessioned2019-02-20T03:58:14Z
dc.date.available2019-02-20T03:58:14Z
dc.date.issued2015
dc.identifier.issn1743-5390
dc.identifier.doi10.3109/17435390.2014.994570
dc.identifier.urihttp://hdl.handle.net/10072/382396
dc.description.abstractSilver nanoparticles (Ag-NPs) are used in a wide variety of products, prompting concerns regarding their potential environmental impacts. To accurately determine the toxicity of Ag-NPs it is necessary to differentiate between the toxicity of the nanoparticles themselves and the toxicity of ionic silver (Ag) released from them. This is not a trivial task given the reactive nature of Ag in solution, and its propensity for both adsorption and photoreduction. In the experiments reported here, we quantified the loss of silver from test solutions during standard ecotoxicity testing conducted using a variety of different test container materials and geometries. This sensitive 110mAg isotope tracing method revealed a substantial underestimation of the toxicity of dissolved Ag to the green algae Pseudokirchneriella subcapitata when calculated only on the basis of the initial test concentrations. Furthermore, experiments with surface-functionalized Ag-NPs under standard algal growth inhibition test conditions also demonstrated extensive losses of Ag-NPs from the solution due to adsorption to the container walls, and the extent of loss was dependent on Ag-NP surface-functionality. These results hold important messages for researchers engaged in both environmental and human nanotoxicology testing, not only for Ag-NPs but also for other NPs with various tailored surface chemistries, where these phenomena are recognized but are also frequently disregarded in the experimental design and reporting.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherTaylor & Francis
dc.relation.ispartofpagefrom1005
dc.relation.ispartofpageto1012
dc.relation.ispartofissue8
dc.relation.ispartofjournalNanotoxicology
dc.relation.ispartofvolume9
dc.subject.fieldofresearchNanotechnology not elsewhere classified
dc.subject.fieldofresearchBiomedical Engineering
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchcode100799
dc.subject.fieldofresearchcode0903
dc.subject.fieldofresearchcode1007
dc.subject.keywordsAdsorption
dc.subject.keywordsIsotope tracing
dc.subject.keywordsNanoparticles
dc.subject.keywordsSilver
dc.subject.keywordsToxicity
dc.titleQuantifying the adsorption of ionic silver and functionalized nanoparticles during ecotoxicity testing: Test container effects and recommendations
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2015. Nanotoxicology. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher, Taylor & Francis Online. Please refer to the journal's website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorSekine, Ryo


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