A new passive sampler for regulated workplace ketones

Details

• Personal Author:
  Que Hee SS ; Tsai S-W
• Description:
  A new solid sorbent passive air sampler for ketones has a silicone membrane atop a diffusion cylindrical path length of 1.1 cm and diameter 1.3 cm above a pellet of Tenax TA coated with 10% (w/w) O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride. Vapors of known concentrations approximating their workplace permissible exposure limits of Occupational Safety and Health Administration-regulated ketones at a relative humidity (RH) of 3 +/- 1% were generated by a syringe pump connected to a dynamic air dilution system connected to an exposure chamber that allowed measurement of face velocities, temperatures, exposing vapor concentrations, and RHs. The O-oxime derivative was desorbed with hexane, and an aliquot injected for gas chromatographic analysis on a nonpolar capillary column by mass spectrometric or electron capture detection. The experimental passive sampler sampling rates in milliliters per minute at 25 degrees C were 4.07 +/- 0.49, cyclohexanone; 6.30 +/- 0.59, diethyl ketone; 6.31 +/- 0.31, ethyl n-butyl ketone; 3.78 +/- 0.25, methyl n-amyl ketone; 3.43 +/- 0.19, methyl n-butyl ketone; 6.48 +/- 0.64, methyl ethyl ketone; 4.37 +/- 0.43, methyl isopropyl ketone; and 4.57 +/- 0.17, methyl n-propyl ketone. These preliminary data show that sterically unhindered ketones can be sampled by the passive sampler as well as aldehydes. [Description provided by NIOSH]
• Subjects:
  Air Movements Aldehydes Chromatography Environmental Monitoring Formaldehyde Hexanes Mass Spectrometry Occupational Health Safety Solvents Volatilization Workplace

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• Keywords:
  Air-flow Air-samplers Air-sampling Air-sampling-equipment Air-sampling-techniques Air-temperature Author Keywords: Adsorption Chromatographic-analysis Exposure-assessment Exposure-levels Exposure-limits Gas-chromatography Gas Chromatography Ketone Mass-spectrometry Oxime Passive Sampler Personal Sampling Quantitative-analysis Sampling-methods Spectroscopes Statistical-analysis Vapor-detectors Vapors Workplace-monitoring Workplace-studies

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• ISSN:
  0002-8894
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  61
• Issue:
  6
• NIOSHTIC Number:
  nn:20039120
• Citation:
  Am Ind Hyg Assoc J 2000 Nov/Dec; 61(6):808-814
• Contact Point Address:
  Shane S. Que Hee, Department of Environmental Health Sciences and UCLA Center for Occupational and Environmental Health, UCLA School of Public Health, 10833 Le Conte Avenue, Los Angeles, CA 90095-1772
• CAS Registry Number:
  Silicon (CAS RN 7440-21-3)
• Federal Fiscal Year:
  2001
• NORA Priority Area:
  Research Tools and Approaches: Exposure Assessment Methods
• Performing Organization:
  University of California Los Angeles, Los Angeles, CA
• Peer Reviewed:
  True
• Start Date:
  19950901
• Source Full Name:
  American Industrial Hygiene Association Journal
• End Date:
  19990831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:6e305d7e6a1477fdee529ce3c6c2ddb7246c6c5da5a4ef136f4ea3474d2b83ca29db5c320239379f545dde8dbdcfb7e42feeb002b00e0fe2e046493b57c9f5ff
• Download URL:
  https://stacks.cdc.gov/view/cdc/192594/cdc_192594_DS1.pdf
• File Type:
  [PDF - 328.18 KB ]