Vis enkel innførsel

dc.contributor.authorKleiven, Merethe
dc.contributor.authorMacken, Ailbhe
dc.contributor.authorOughton, Deborah H
dc.date.accessioned2021-06-21T09:18:44Z
dc.date.available2021-06-21T09:18:44Z
dc.date.created2019-02-26T09:33:58Z
dc.date.issued2019
dc.identifier.citationChemosphere. 2019, 221 785-792.en_US
dc.identifier.issn0045-6535
dc.identifier.urihttps://hdl.handle.net/11250/2760356
dc.description.abstractSilver, known for its antibacterial properties and for its toxicity to aquatic organisms, is one of the most frequently used nanomaterials and silver nanoparticles can be found in a range of consumer products as well as medical applications. The present study investigated the toxicity of three different nanomaterials (Mesosilver, NM300K and NM302) and AgNO3, in the algae Raphidocelis subcapitata. Exposures in the low µg L-1 range were combined with characterization of exposure media to determine whether differences in toxicity could be linked to changes in Ag speciation. All tested Ag compounds, except the NM302 Ag rods, reduced growth in the following order AgNO3 ≥ M-Ag > NM300K > NM302 with 50 % effect concentrations of 7.09 (3.83-10.52), 9.7 (range not calculated) and 24.18 (15.66-98.16) µg L-1 , for AgNO3, Mesosilver and NM300K, respectively. Characterization of exposure media showed that both concentration and time influenced the speciation and stability of Ag in test media, regardless of Ag source, and also affected the toxicity to R. subcapitata. In both AgNO3 and Mesosilver exposure the toxicity was correlated with the presence of Ag(I) (< 10 kDa), however levels of Ag(I) were too low to account for the observed Mesosilver effects, indicating a nanospecific contribution. Nanospecific toxicity was also observed for NM300K after 24 h of exposure, however the algae population recovered over time probably due to changes in exposure caused by aggregation of the nanoparticles.en_US
dc.language.isoengen_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleGrowth inhibition in Raphidocelis subcapita – Evidence of nanospecific toxicity of silver nanoparticlesen_US
dc.title.alternativeGrowth inhibition in Raphidocelis subcapita – Evidence of nanospecific toxicity of silver nanoparticlesen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.source.pagenumber785-792en_US
dc.source.volume221en_US
dc.source.journalChemosphereen_US
dc.identifier.doi10.1016/j.chemosphere.2019.01.055
dc.identifier.cristin1680637
dc.relation.projectNorges forskningsråd: 221391en_US
cristin.unitcode192,14,0,0
cristin.unitnameMiljøvitenskap og naturforvaltning
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal