Comparison of sampling methods for 1,6·hexamethylene diisocyanate during spray finishing operations

Details

• Personal Author:
  Carlton GN ; England EC ; Key-Schwartz, Rosa J. ; Lesagé J
• Description:
  This report summarizes the results of a comparison study of isocyanate sampling methods for 1,6-hexamethylene diisocyanate (HDI) in Air Force spray painting environments. This study compared the performance of the Isocheck sampler (Omega, Inc.) and calculated HDI oligomer concentrations from total mass air concentrations against existing NIOSH and OSHA monitoring methods for isocyanates. The results will determine the correlation between sampling results obtained using the Isocheck sampler in field environments and existing sampling methods for HDI. Additionally, because of very limited existing data, the study was accomplished to assess aircraft painters' exposures to isocyanates. Seven methods for monitoring HDI oligomer and monomer levels were compared. Fifty-eight sampling sets were collected during spray painting of aircraft and aircraft parts at four Air Force bases. Impinger and cassette samplers were mounted side-by-side on a mannequin located in maximum paint overspray areas. Additionally, 58 sampling sets of personal breathing zone samples comparing NIOSH 5521, Isocheck sampler, and total aerosol mass methods were collected. Breathing zone air concentrations of HDI monomer ranged from 0.001-0.046 mg/m3. Breathing zone air concentrations of HDI oligomer ranged from 0.01-2.36 mg/ml. Calculated 8-hour time-weighted average exposure levels ranged from 0.01-0.58 mg/m3 for HDI oligomer. It is concluded that aircraft painters monitored in this study have exposures to HDI monomer less than the ACGIH TLV-TWA of 0.034 mg/m3 and exposures to HDI oligomer exceeding the State of Oregon guideline of 1.0 mg/m3 as a ceiling concentration. Comparison data among the various sampling techniques has been statistically analyzed and will be available for presentation [Description provided by NIOSH]
• Subjects:
  Aircraft Environmental Monitoring Isocyanates Occupational Exposure Occupational Health Paint Safety Workplace
• Keywords:
  Air-monitoring Air-samplers Air-sampling-equipment Analytical-instruments Analytical-methods Breathing-zone Employee-exposure Equipment-reliability Exposure-levels Exposure-limits Military-personnel Monomers Paint-spraying Paints Performance-capability Permissible-concentration-limits Samplers Sampling-equipment Sampling-methods Spray-painting Time-weighted-average-exposure Workplace-studies

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• Publisher:
  American Industrial Hygiene Association
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  Georgia ; Ohio ; OSHA Region 4 ; OSHA Region 5 ; OSHA Region 6 ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  75
• NIOSHTIC Number:
  nn:20044039
• Citation:
  American Industrial Hygiene Conference and Exposition, May 9-15, 1998, Atlanta, Georgia. Fairfax, VA: American Industrial Hygiene Association, 1998 May; :75
• CAS Registry Number:
  Hexamethylene diisocyanate (CAS RN 822-06-0)
• Federal Fiscal Year:
  1998
• Peer Reviewed:
  False
• Source Full Name:
  American Industrial Hygiene Conference and Exposition, May 9-15, 1998, Atlanta, Georgia
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b76cee76f638b9a594fef147d21504b6e002586cf95ea5c34405d8d53f6ded8ee1bcedd2666fb81a89c08511a3aa6470d4a9b8470e7c06131fcd2baeea6e29bd
• Download URL:
  https://stacks.cdc.gov/view/cdc/199893/cdc_199893_DS1.pdf
• File Type:
  [PDF - 633.60 KB ]