Perspectives from the Field: Occupational Exposures to Carbon Nanotubes in the US

Details

• Personal Author:
  Dahm, Matthew M.
• Description:
  Early exposure assessment studies for carbon nanotubes (CNT), which reported personal breathing zone samples collected within workplaces, focused on the collection of samples for the total gravimetric mass of all particles or indirectly estimated mass specific to CNT. However, the interpretation of gravimetric sampling for CNT has proven difficult due to the unique characteristics of CNT which includes low densities and mass. More recently, the measurement of elemental carbon from personal breathing zone collections has provided more realistic mass-based workplace exposure estimates. Plausible exposure metrics and results from 12 workplace exposure assessment site visits conducted within facilities producing or using some form of CNT within the United States will be presented and contrasted with similar studies being performed internationally. These interpretations include realistic occupational exposures to forms of CNT commonly found in industry and examination of trends seen in exposure by type of industry (electronics, composites, plastics, producers). In addition, specific metrics of exposure, such as the mass of elemental carbon at both the respirable and inhalable size fractions as well as air, dermal, and sputum samples analyzed by microscopy, will be discussed. [Description provided by NIOSH]
• Subjects:
  Air Pollution Environmental Monitoring Lung Manufacturing And Industrial Facilities Occupational Exposure Occupational Health Particulate Matter Respiratory System Safety Toxicology Workplace

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• Keywords:
  Air Quality Measurement Air Sampling Air Sampling Techniques Breathing Zone Carbon Nanotubes Chemical Manufacturing Industry CNT Elemental Carbon Exposure Assessment Gravimetric Analysis Industrial Engineering Industrial Factory Workers Inhalation Nanotechnology Nanotoxicology Nanotubes Occupational Exposure Particle Size Pulmonary Effects Sampling Sampling Methods Work Environment Workplace Studies

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• ISSN:
  1096-6080
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  Maryland ; Ohio ; OSHA Region 3 ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSHEFS - Division of Surveillance, Hazard Evaluations, and Field Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  168
• Issue:
  1
• NIOSHTIC Number:
  nn:20055062
• Citation:
  Toxicologist 2019 Mar; 168(1):378
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0) ; Carbon nanotubes (CAS RN 308068-56-6)
• Federal Fiscal Year:
  2019
• Peer Reviewed:
  False
• Source Full Name:
  The Toxicologist. Society of Toxicology 58th Annual Meeting and ToxExpo, March 10-14, 2019, Baltimore, Maryland
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8156b3983065edfd5a746c434882943637ccb2b991aafe3a2325113914e85ba92518cab4115ae7e48c2192795a9023f2b1c987e77019fdd0b22cdb9e442c9282
• Download URL:
  https://stacks.cdc.gov/view/cdc/217441/cdc_217441_DS1.pdf
• File Type:
  [PDF - 865.58 KB ]