AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Nanoparticle Characterization for Exposure Studies
KAARLE HAMERI, Joonas Koivisto, University of Helsinki, Department of Physics
Abstract Number: 623 Working Group: Aerosol Exposure
Abstract The understanding of the occupational health and safety aspects of engineered nanoparticles and nanomaterials (ENP or ENM) is still limited because quantitative exposure levels are lacking and dose metrics are unclear. In this study, we present exposure measurements carried out in different occupational environments. Our aim is to compare different exposure scenarios during ENM synthesis and handling. We found that in nanoparticle (NP) synthesis with liquid flame spray process, the exposure and dose of NPs were defined by number. While in TiO2 ENM packing and carbon nanodiamond handling the exposure and dose were defined by mass. In NP synthesis, the dose of NPs 70% were deposited in alveolar region, while in ENM handling nearly all ENM particles were deposited in head-airways.