Characterization of Paint Dust Aerosol Generated from Mechanical Abrasion of TiO2-Containing Paints

Details

• Personal Author:
  Chalbot M-CG ; Kavouras IG ; Nored AW
• Description:
  The purpose of the study was to determine the potential for release of titanium dioxide nanoparticles in paint dust. The coatings aerosol resuspension system was developed and used for testing the generation and physical, chemical and morphological properties of paint dust particles from mechanical abrasion (i.e., sanding) of coated wood surfaces. The paint dust emissions from bare and coated wood surfaces with multiple coatings using variable sandpaper grits were evaluated. Substantially higher particle number concentrations were measured for paint dust containing particles in the nano range (particles with aerodynamic diameter less than 100 nm) than those measured for wood dust. The variability of particle number concentration and size distribution of paint dust derived under different conditions indicated that considerable quantities of nanoparticles might be released from mechanical abrasion of painted surfaces that may induce unhealthy exposure conditions. Moreover, spectroscopic and microscopic analysis identified the presence of paint and wood components in paint dust, including titanium dioxide agglomerates that were originally embedded in the paint. The agglomerates were mostly attached to particles with sizes < 100 nm, enabling them to potentially penetrate into the lower respiratory tract. These results demonstrated that the paint dust exposure generation system can provide qualitative and quantitative information on particle emissions and the abundance of nanoparticles from paint sanding in realistic conditions and they may be used to assess occupational and environmental exposures and risks. Furthermore, the prevalence of titanium dioxide nanoparticles in paint dust highlights the potential for exposures of painters and other occupational groups to hazardous paint dust and the need for protective devices and strategies aiming to reduce exposures to nanoparticles. [Description provided by NIOSH]
• Subjects:
  Chemistry Coloring Agents Dust Hazardous Substances Laboratories Metals Occupational Health Paint Particulate Matter Respiratory System Safety Spectrum Analysis Titanium Wood

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• Keywords:
  Abrasives Aerosol Generators Author Keywords: Nanoparticles Chemical Properties Coatings Dusts Emission Sources Exposure Assessment Hazardous Materials Laboratory Testing Metal Oxides Morphology Nanoparticles Nanoscale Nanotechnology Painters Paints Particle Diameter Particle Size Physical Properties Pigments Qualitative Analysis Quantitative Analysis Respiratory Irritants Sand Blasting Sanding Scanning Electron Microscopy Spectrographic Analysis Spectroscopy Titanium Dioxide Wood Dust Wood Products

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• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Alabama ; New York ; OSHA Region 2 ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  15
• Issue:
  9
• NIOSHTIC Number:
  nn:20051638
• Citation:
  J Occup Environ Hyg 2018 Sep; 15(9):629-640
• Contact Point Address:
  Ilias G. Kavouras, Department of Environmental, Occupational and Geospatial Health Sciences, CUNY Graduate School of Public Health and Health Policy, 55 W 125 Str. New York, NY 10027
• Email:
  ilias.kavouras@sph.cuny.edu
• CAS Registry Number:
  Titania (CAS RN 13463-67-7)
• Federal Fiscal Year:
  2018
• Performing Organization:
  University of Alabama at Birmingham
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20270630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b820f8d2773a68ad8191c19304cb815a5755e4049b1eadb61dde193b2af0901b83b402daf75a0d9a1ed3e005dae25374553233e233296ad68015c9495c7221f6
• Download URL:
  https://stacks.cdc.gov/view/cdc/211495/cdc_211495_DS1.pdf
• File Type:
  [PDF - 2.64 MB ]