Ventura, CéliaLourenço, Ana FilipaVilar, MadalenaTeixeira, SaraFerreira, Paulo J.T.Silva, Maria João2020-06-092020-06-092019-06-04http://hdl.handle.net/10400.18/6981Nanomaterial - A natural, incidental or manufactured material containing particles, in an unbound state or as an aggregate or as an agglomerate and where, for 50% or more of the particles in the number size distribution, one or more external dimensions is in the size range 1 nm - 100 nm. In specific cases and where warranted by concerns for the environment, health, safety or competitiveness the number size distribution threshold of 50% may be replaced by a threshold between 1 and 50%. (2011/696/EU)engNanofibrillated CelluloseNanomaterialsEnvironmental GenotoxicityGenotoxicidade Ambientallecture