Manufactured metal and metal-oxide nanoparticles: Properties and perturbing mechanisms of their biological activity in ecosystems |
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| Authors: | Jean-Yves Bottero Mélanie Auffan Jérôme Rose Catherine Mouneyrac Céline Botta Jérôme Labille Armand Masion Antoine Thill Corinne Chaneac |
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| Institution: | 1. CEREGE UMR 6635, CNRS, Aix-Marseille Université Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence cedex 4, France;2. GDRI ICEINT, France;3. MMS, EA2160, université de Nantes et université catholique de l’Ouest, 3, place André-Leroy 49008 Angers, France;4. CEA SaclayDSM/IRAMIS/ SIS2M, LIONS, 91191 Gif-sur-Yvette LIONS-SiS2M-CEA, France;5. Laboratoire chimie de la matière condensée, Collège de France, université Pierre-et-Marie-Curie, 11, place Marcelin-Berthelot, 75231 Paris, France |
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| Abstract: | The inorganic manufactured nanoparticles as TiO2, Ag°, the iron oxides and CeO2 are more and more present in various manufactured products and in the aqueous media (TiO2). Their dispersion in the ecosystems during their life cycle will be associated with interactions with biota (plants, bacteria, fishes). The present work shows strong relations between particular physical chemical properties of very small nanoparticles (size < 30 nm) and biological activity perturbations. It is shown that Ag° and CeO2 act at very low concentrations. TiO2 act via the ROS production due to their photo-reactivity. |
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