Comparative toxic effects of copper-based nanoparticles and their microparticles in Daphnia magna by using natural freshwater media

dc.creatorArratia, Francisca
dc.creatorOlivares Ferretti, Pamela
dc.creatorGarcia Rodriguez, Alba
dc.creatorMarcos, Ricard
dc.creatorCarmona Ortíz, Erico
dc.date2019
dc.date2021-04-30T17:05:04Z
dc.date2021-04-30T17:05:04Z
dc.date.accessioned2021-06-14T22:08:27Z
dc.date.available2021-06-14T22:08:27Z
dc.identifierNEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH,Vol.53,460-469,2019
dc.identifierhttp://repositoriodigital.uct.cl/handle/10925/3932
dc.identifier10.1080/00288330.2019.1598447
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3301439
dc.descriptionCopper-based nanoparticles (NPs) are being widely used in different application fields and their health impacts to aquatic environments represent a current concern. Few studies are available about their comparative toxicity with their bulks and ions under natural exposition in aquatic organisms. Thus, the toxicity of Cu and CuO NPs and their microparticle and ionic forms was assayed in the acute immobilisation test of Daphnia magna by using freshwater media. Electronic microscopy, laser doppler velocimetry, and dynamic laser scattering methodologies were used to NPs characterisation. The results indicated that CuNPs and CuONPs were more toxic than their microparticles. Among NPs, CuNPs showed higher toxicity than CuONPs. Copper-based nanoparticles showed similar hydrodynamic particle size and were agglomerated in culture media, suggesting toxic-ionic release relationship and corroborated by the high toxicity induced by CuSO4. Additionally, water chemistry of natural freshwater used in the experiments also favoured the ion release of these NPs.
dc.languageen
dc.publisherTAYLOR & FRANCIS LTD
dc.sourceNEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
dc.subjectAcute toxicity
dc.subjectcrustaceans
dc.subjectmetal nanoparticles
dc.subjectnanomaterials
dc.subjectsurface freshwater
dc.titleComparative toxic effects of copper-based nanoparticles and their microparticles in Daphnia magna by using natural freshwater media
dc.typeArticle


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