Dustiness test of nanopowders using a standard rotating drum with a modified sampling train

Chuen Jinn Tsai, Chien Hsien Wu, Ming Long Leu, Sheng Chieh Chen, Cheng Yu Huang, Perng Jy Tsai, Fu Hsiang Ko

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The standard rotating drum tester was used to determine the dustiness of two nanopowders, nano-TiO2 and fine ZnO, in standard 1-min tests. Then, the sampling train was modified to determine the number and mass distributions of the generated particles in the respirable size range using a Scanning Mobility Particle Sizer (SMPS), an Aerodynamic Particle Sizer (APS) and a Multi-orifice Uniform Deposit Impactor (MOUDI) in the 30-min tests. It was found that very few particles below 100 nm were generated and the released rate of particles decreased with increasing rotation time for both nanopowders in the 30-min tests. Due to the fluffy structure of the released TiO2 agglomerated particles, the mass distributions measured by the MOUDI showed large differences with those determined by the APS assuming the apparent bulk densities of the powders. The differences were small for the ZnO agglomerates, which were more compact than the TiO2 agglomerates.

Original languageEnglish (US)
Pages (from-to)121-131
Number of pages11
JournalJournal of Nanoparticle Research
Volume11
Issue number1
DOIs
StatePublished - Jan 2009

Bibliographical note

Funding Information:
Acknowledgement The financial support from the Taiwan National Science Council via the contract NSC 96-2120-M-006-005 is gratefully acknowledged.

Keywords

  • Aerosol instrument
  • Aerosol sampling
  • Dustiness
  • EHS
  • Nanoparticle
  • Nanotechnology
  • Occupational health

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