• DOI:10.1080/02786826.2015.1114999
• Corpus ID: 53998736

Dustiness and Deagglomeration Testing: Interlaboratory Comparison of Systems for Nanoparticle Powders

@article{Ding2015DustinessAD,
  title={Dustiness and Deagglomeration Testing: Interlaboratory Comparison of Systems for Nanoparticle Powders},
  author={Yaobo Ding and Burkhard Stahlmecke and Araceli S{\'a}nchez Jim{\'e}nez and Ilse L. Tuinman and Heinz Kaminski and Thomas A J Kuhlbusch and Martie van Tongeren and Michael Riediker},
  journal={Aerosol Science and Technology},
  year={2015},
  volume={49},
  pages={1222 - 1231}
}

• Yaobo Ding, B. Stahlmecke, +5 authors M. Riediker
• Published 5 November 2015
• Environmental Science
• Aerosol Science and Technology

Different types of aerosolization and deagglomeration testing systems exist for studying the properties of nanomaterial powders and their aerosols. However, results are dependent on the specific methods used. In order to have well-characterized aerosols, we require a better understanding of how system parameters and testing conditions influence the properties of the aerosols generated. In the present study, four experimental setups delivering different aerosolization energies were used to test the resultant aerosols of two distinct nanomaterials (hydrophobic and hydrophilic TiO2). The reproducibility of results within each system was good. However, the number concentrations and size distributions of the aerosols created varied across the four systems; for number concentrations, e.g., from 103 to 106 #/cm3. Moreover, distinct differences were also observed between the two materials with different surface coatings. The article discusses how system characteristics and other pertinent conditions modify the test results. We propose using air velocity as a suitable proxy for estimating energy input levels in aerosolization systems. The information derived from this work will be especially useful for establishing standard operating procedures for testing nanopowders, as well as for estimating their release rates under different energy input conditions, which is relevant for occupational exposure. Copyright © 2015 American Association for Aerosol Research