Characterization of scanning mobility particle sizers for use with nanoaerosols.

Details

• Personal Author:
  Henderson MR
• Description:
  The purpose of this study was to evaluate the performance of scanning mobility particle sizers in the characterization of nanoaerosols. A sampling chamber was constructed from aluminum and tempered glass, had a volume of 4.6 cubic feet, and was designed for the introduction of aerosols and dilution air, maintenance of aerosol concentration, and continuous exhaust of chamber air. Penetration and aerosol distribution tests were conducted within the chamber. An aerosol generation and measurement system comprised of nitrogen gas, BGI 3 jet Collison Nebulizer, diffusion dryer, aerosol charge neutralizer, mixing chamber, critical orifice, hygrometer, condensation particle counter, scanning mobility particle sizer, air sampling pump, air sampling cassettes, and a vacuum pump was assembled. A BGI 3 jet Collison Nebulizer was used to generate the nanoparticle aerosols. The two types of nanoparticle aerosols utilized in the experiment were salt (NaCl) and polystyrene latex (PSL) spheres. Relative humidity and temperature measurements were obtained within the chamber. Real-time, direct-reading particle measurement instruments including a condensation particle counter (CPC) (TSI, Model 3007), and three scanning mobility particle sizer (SMPS) instruments (Particle Measuring Systems, Nano-ID NPS500; TSI, NanoScan SMPS Nanoparticle Sizer Model 3910) were used for particle measurements. For each test run, two air samples were collected on membrane filters for electron microscopy (EM) analysis. Eight trials were conducted using NaCl nanoaerosols, and twelve trials were conducted using PSL spheres. The selected particle sizes for the experiments were 57 nm, 92 nm, 147 nm, and 220 nm. [Description provided by NIOSH]
• Subjects:
  Aerosols Aluminum Compounds Environmental Monitoring Humidity Occupational Health Safety Temperature
• Keywords:
  Author Keywords: Engineered Nanomaterials; Nanoparticles; Direct Reading Instruments Scanning Techniques; Particle Sizers; Nanoparticles; Aerosols; Sampling; Aluminum; Exhaust Systems; Nitrogen Compounds; Gases; Air Sampling; Pumps; Vacuum Equipment; Humidity; Temperature Effects; Temperature Measurement; Particle Counters; Filters; Electron Microscopy;
• Publisher:
  University of South Florida
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Dissertation
• Place as Subject:
  Florida ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-108
• NIOSHTIC Number:
  nn:20065499
• Citation:
  Tampa, FL: University of South Florida, 2018 Apr; :1-108
• Email:
  mhenders@health.usf.edu
• CAS Registry Number:
  Aluminum (CAS RN 7429-90-5) ; Polystyrene (CAS RN 9003-53-6)
• Federal Fiscal Year:
  2018
• Performing Organization:
  Sunshine Education and Research Center, University of South Florida
• Peer Reviewed:
  False
• Start Date:
  20050701
• Source Full Name:
  Characterization of scanning mobility particle sizers for use with nanoaerosols
• End Date:
  20290630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f3d9cbeffed3f8211db6715542fd149bdfba3a8bb820938f0a59bb4f55f766b5c174d7d99e293fcc525eb4cd27ffed380efdf454b60dd0313091c23477bc7355
• Download URL:
  https://stacks.cdc.gov/view/cdc/248785/cdc_248785_DS1.pdf
• File Type:
  [PDF - 2.86 MB ]