Size distributions of aerosols in an indoor environment with engineered nanoparticle synthesis reactors operating under different scenarios

Manoranjan Sahu, Pratim Biswas

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Size distributions of nanoparticles in the vicinity of synthesis reactors will provide guidelines for safe operation and protection of workers. Nanoparticle concentrations and size distributions were measured in a research academic laboratory environment with two different types of gas-phase synthesis reactors under a variety of operating conditions. The variation of total particle number concentration and size distribution at different distances from the reactor, off-design state of the fume hood, powder handling during recovery, and maintenance of reactors are established. Significant increases in number concentration were observed at all the locations during off-design conditions (i.e., failure of the exhaust system). Clearance of nanoparticles from the work environment was longer under off-design conditions (20 min) compared to that under normal hood operating conditions (4-6 min). While lower particle number concentrations are observed during operation of furnace aerosol reactors in comparison to flame aerosol reactors, the handling, processing, and maintenance operations result in elevated concentrations in the work area.

Original languageEnglish (US)
Pages (from-to)1055-1064
Number of pages10
JournalJournal of Nanoparticle Research
Volume12
Issue number3
DOIs
StatePublished - Mar 2010
Externally publishedYes

Keywords

  • Exposure
  • Gas-phase synthesis
  • Manufacturing safety
  • Nanoparticles
  • Occupational health
  • Particle concentration
  • Size distribution

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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