Monitoring strategy for characterization of airborne nanoparticles

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Proceedings titleNanotechnology 2014: Graphene, CNTs, Particles, Films and Composites
ConferenceNanotech 2014: Technical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, June 15-18, 2014, Washington, DC
Pages495496; # of pages: 2
SubjectBackground characterization; CPC; ICP-MS; Instrument comparison; Nanoparticle exposures; Sampling; Size distribution; SMPS
AbstractA major challenge in monitoring indoor exposures to nanoparticles is the selection and effective use of suitable instrumentation. Comparability, portability, response time, and reliability are important selection criteria in addition to reasonable cost. Amongst these criteria, instrument comparability is especially critical due to the requirement for multiple instruments in a single exposure assessment and the lack of reference standards for instrument calibration. Testing and verifying instrument comparability, therefore, is essential to ensure the reliability of exposure assessment data. In this study, a variety of portable and non-portable direct-reading instruments, including scanning mobility particle sizers, condensation particle counters, aerodynamic particle sizers, diffusion charger and aerosol mass monitors, were deployed simultaneously. Instrument performance was evaluated in a room-sized environmentally-controlled chamber with the goal of recommending a suite of instruments to provide particle number, surface area, particle size distribution and mass measurements with an acceptable level of uncertainty. The instrumental strategy was then applied to monitoring background aerosols in a typical workplace setting, where laser printers provided a point source for monitoring response time and comparing peak-to-background signals. The study also explored filter-based methods for collecting nanoparticles for subsequent elemental analysis using inductively-coupled plasma mass spectroscopy (ICP-MS).
Publication date
AffiliationNational Research Council Canada; Construction
Peer reviewedYes
NPARC number21275947
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Record identifier539ea30c-be15-4fc8-9343-c19ec248adf8
Record created2015-08-12
Record modified2017-07-05
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