Size, Composition, Morphology, and Health Implications of Airborne Incidental Metal-Containing Nanoparticles

Details

• Personal Author:
  Anthony, T. Renée ; Gonzalez-Pech NI ; Grassian VH ; Park JH ; Peters TM ; Stebounova LV ; Ustunol IB
• Description:
  There is great concern in the adverse health implications of engineered nanoparticles. However, there are many circumstances where the production of incidental nanoparticles, i.e., nanoparticles unintentionally generated as a side product of some anthropogenic process, is of even greater concern. In this study, metal-based incidental nanoparticles were measured in two occupational settings: a machining center and a foundry. On-site characterization of substrate-deposited incidental nanoparticles using a field-portable X-ray fluorescence provided some insights into the chemical characteristics of these metal-containing particles. The same substrates were then used to carry out further off-site analysis including single particle analysis using scanning electron microscopy and energy-dispersive X-ray spectroscopy. Between the two sites, there were similarities in the size and composition of the incidental nanoparticles as well as in the agglomeration and coagulation behavior of nanoparticles. In particular, incidental nanoparticles were identified in two forms: sub-micrometer fractal-like agglomerates from activities such as welding and super-micrometer particles with incidental nanoparticles coagulated to their surface, herein referenced as nanoparticle collectors. These agglomerates will affect deposition and transport inside the respiratory system of the respirable incidental nanoparticles and the corresponding health implications. The studies of incidental nanoparticles generated in occupational settings lay the groundwork on which occupational health and safety protocols should be built. [Description provided by NIOSH]
• Subjects:
  Dust Manufacturing And Industrial Facilities Occupational Health Safety
• Keywords:
  Author Keywords: Fractal-like Agglomerates Foundry Workers Incidental Nanoparticles Machinists Metal Industry Nanoparticles Nanotechnology NP-collectors Respirable Dust Respiratory Deposition Curve Single Particle Analysis X-ray Fluorescence Analysis

  More +
• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; Indiana ; Iowa ; OSHA Region 5 ; OSHA Region 7 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  387-399
• Volume:
  16
• Issue:
  6
• NIOSHTIC Number:
  nn:20054084
• Citation:
  J Occup Environ Hyg 2019 Jun; 16(6):387-399
• Contact Point Address:
  Vicki H. Grassian, University of California, San Diego, 9500 Gilman Drive; Mail Code 0314, La Jolla, CA 92093
• Email:
  vhgrassian@ucsd.edu
• Federal Fiscal Year:
  2019
• Performing Organization:
  University of Iowa, Iowa City
• Peer Reviewed:
  True
• Start Date:
  20130901
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20180831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:90492e374b06907cb56c2f41e0b405f47bcd9c31ebd7141627e51b6706227056319149acb6e8a3f867bb9e82c5dc6c99de3bfc6ddba2325d9aa66a3bab10e7e1
• Download URL:
  https://stacks.cdc.gov/view/cdc/216721/cdc_216721_DS1.pdf
• File Type:
  [PDF - 2.75 MB ]