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Methodological issues about techniques for the spiking of standard OECD soil with nanoparticles: evidence of different behaviours

TitleMethodological issues about techniques for the spiking of standard OECD soil with nanoparticles: evidence of different behaviours
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2015
AuthorsMiglietta, M.L., Rametta G., Manzo Sonia, Salluzzo Antonio, Rimauro Juri, and Di Francia G.
JournalJournal of Nanoparticle Research
Keywordsarticle, Chemical analysis, concentration (parameters), controlled study, ecological procedures, Ecotoxicological potentials, Ecotoxicological properties, ecotoxicology, Environmental monitoring, Homogeneous distribution, International collaborations, international cooperation, Lepidium sativum, nanoparticle, Nanoparticles, physical chemistry, Physicochemical property, phytotoxicity, priority journal, soil analysis, soil property, Soil testing, Soils, Solubility, spiking procedure, Spiking procedures, Terrestrial ecosystems, toxicity testing, Water analysis, zinc chloride, Zinc oxide, zinc oxide nanoparticle

The aim of this study is to investigate at what extent the results of standard nanoparticle (NP) toxicity testing methodologies are affected by the different exposure procedures on soil organisms. In this view, differences in physicochemical properties of ZnO NPs (<100 nm), ZnO bulk (<200 nm) and ionic Zinc (ZnCl2) and their ecotoxicological potential toward Lepidium sativum were investigated with respect to three different spiking methods. Results show that the spiking procedures give homogeneous distribution of the testing nanomaterial in soil but the physicochemical and ecotoxicological properties of the testing species differ according to the spiking procedure. Dry spiking produced the highest ZnO solubility whereas spiking through dispersions of ZnO in water and in aqueous soil extracts produced the lowest. At the same time, the ecotoxic effects showed different trends with regard to the spiking route. The need for a definition of agreed methods concerning the NP spiking procedures is, therefore, urgent. © 2015, Springer Science+Business Media Dordrecht.


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Citation KeyMiglietta2015