Title of article :
Manufactured metal and metal-oxide nanoparticles: Properties and perturbing mechanisms of their biological activity in ecosystems
Author/Authors :
Bottero، نويسنده , , Jean-Yves and Auffan، نويسنده , , Mélanie and Rose، نويسنده , , Jérôme and Mouneyrac، نويسنده , , Catherine and Botta، نويسنده , , Céline and Labille، نويسنده , , Jérôme and Masion، نويسنده , , Armand and Thill، نويسنده , , Antoine and Chaneac، نويسنده , , Corinne، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
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.
Keywords :
Nanoparticles , Metals , Ecosystems , oxides , Surface properties , Nanoparticules , propriétés de surface , métaux , ةcosystèmes , Exotoxicity , Oxydo-reduction , Oxydes , ةcotoxicité , Oxydoréduction
Journal title :
Comptes Rendus Geoscience
Journal title :
Comptes Rendus Geoscience
