poster_iac 2014_final
TRANSCRIPT
An Integrated Tool to Test Mechanical Stability of Airborne Nanoparticles
Yaobo Ding1, Michael Riediker1,2
1Institut de Santé au Travail (IST), Université de Lausanne, Switzerland 2 SAFENANO, IOM Singapore, Singapore, 048622, Singapore
Contact: [email protected]; [email protected]
EXPOSURE INHALATION TRANSLOCATION
Motivation
Are nanoparticle agglomerates in the air stable ? How big are they ?
Nanopowder handling Deposition in the lung Circulation in the body
Method
Results
Aerosolization under different air flows
Treatment under different energy input
Changes in size and particle generation
ACKNOWLEDGEMENT: This work is supported by the EU FP7 MARINA project (grant agreement no: 263215). The participation of this conference is funded by “Fondation pour l’université de Lausanne”. The authors appreciate the support of the project and the foundation.
Conclusions
Stable aerosolization process Pressure drop seems to break up large agglomerates: reduction of particle size; increase of particle number Ranking of deagglomeration potential of engineered nanomaterials seems possible Test results can be useful for human exposure and risk assessment
Figure 2 Particle number and size evolutions under different air flows
Figure 3 Particle size distributions under different pressure conditions
Figure 4 Particle sizes and generation rates under varied pressures
SMPS OPC
10-42 nm primary particle sizes
Figure 1 Schematic diagram of aerosolization and deagglomeration system