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What are the mechanism face-off?
The nanomaterials evolve during their whole life cycle. It is essential to take into account their evolution in the environment, the various mechanisms which are involved during the critical phases: the dispersion in the air, the propensity to deposit and to agglomerate, the migration and the transformation in water and the ground, the conditions and preferential places of accumulation, the conditions of persistence and degradation, as well as the acute and chronic toxicity of these structures on the flora and the fauna.
Critic phases mechanisms.
At the moment, the data available on the mechanisms is fragmentary and in the course of stabilization. The European projects MARINA (“Managing risks of nanomaterials”) or SUN (“Sustainable nanotechnologies”) try now to define these mechanisms; in particular for ageing and degradation housing.