Investigation of ZnO nanoparticles' ecotoxicological effects towards different soil organisms

TitleInvestigation of ZnO nanoparticles' ecotoxicological effects towards different soil organisms
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2011
AuthorsManzo, Sonia, Rocco A., Carotenuto R., F. Picione De Luca, Miglietta M.L., Rametta G., and Di Francia G.
JournalEnvironmental Science and Pollution Research
Keywordsanimal, Animals, article, Candida, chemistry, Crustacea, crustacean, drug effect, ecotoxicology, electron, Folsomia candida, Food chain, genotoxicity, Hexapoda, industrialization, insect, Insects, leafy vegetable, Lepidium sativum, metal nanoparticle, Metal nanoparticles, Microscopy, Ostracoda, oxide, particulate matter, Plant, Plants, Reproduction, Scanning, Scanning electron microscopy, Soil, soil biota, soil pollutant, Soil Pollutants, toxicology, Vicia faba, Zinc oxide

Introduction: Nanomaterials have widespread applications in several industrial sectors. ZnO nanoparticles (NPs) are among the most commonly used metal oxide NPs in personal care products, coating and paints. However, their potential toxicological impact on the environment is largely unexplored. Materials and methods: The aim of this work was to evaluate whether ZnO nanoparticles exert toxic and genotoxic effects upon terrestrial organisms: plants (Lepidium sativum, Vicia faba), crustaceans (Heterocyipris incongruens), insects (Folsomia candida). To achieve this purpose, organisms pertaining to different trophic levels of the soil ecosystem have been exposed to ZnO NPs. In parallel, the selected soil organisms have been exposed to the same amount of Zn in its ionic form (Zn2+) and the effects have been compared. Results: The most conspicuous effect, among the test battery organisms, was obtained with the ostracod H. incongruens, which was observed to be the most sensitive organism to ZnO NPs. The root elongation of L. sativum was also mainly affected by exposure to ZnO NPs with respect to ZnCl2, while collembolan reproduction test produced similar results for both Zn compounds. Slight genotoxic effects with V. faba micronucleus test were observed with both soils. Conclusion: Nanostructured ZnO seems to exert a higher toxic effect in insoluble form towards different terrestrial organisms with respect to similar amounts of zinc in ionic form. © 2010 Springer-Verlag.


cited By 52