Passive cryogenic whole air field sampler.

Details

• Personal Author:
  Bird SK ; Dugan JP Jr. ; Fernandez SJ ; McManus GJ ; Motes BG
• Description:
  A passive cryogenic sampler was developed for the collection of whole air samples without loss or concentration of any atmospheric constituents. The principle of operation was the collection by bulk gas flow and condensation of a whole air sample into a previously evacuated cylinder surrounded by a liquid nitrogen reservoir. The sample evaluation was performed in three phases. The first phase determined sample flow rate, sample size, resultant sample pressure, and sample collection lifetime as a function of the liquid nitrogen additions. The second phase analyzed simulated whole air samples for bulk composition, noble gases, selected chlorofluorocarbons, and tritium (10028178) before and after collection in the cryogenic air sampler. The third phase involved collection of actual field samples and analysis for bulk composition and chlorofluorocarbon content. Operation of the sampler did not require electrical power, so that it could be used where potentially explosive gas mixtures are found. The sampling lifetime can extend to 4 hours with refilling of the liquid nitrogen reservoir.
• Subjects:
  Accidents, Occupational Coal Coal Mining Dust Mining Occupational Exposure Occupational Health Safety
• Keywords:
  Air-sampling Air-sampling-equipment Environmental-contamination Environmental-pollution Explosive-atmospheres Halogenated-hydrocarbons Organic-vapors Sampling-methods Toxic-gases
• Document Type:
  Text
• Genre:
  Conference/Symposia Proceedings
• Place as Subject:
  Florida ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  653-655
• NIOSHTIC Number:
  nn:00210441
• Citation:
  NIOSH 1991 Feb; :653-655
• CAS Registry Number:
  Tritium (CAS RN 10028-17-8)
• Federal Fiscal Year:
  1991
• Peer Reviewed:
  False
• Source Full Name:
  Field Screening Methods for Hazardous Wastes and Toxic Chemicals. Second International Symposium, February 12-14, 1991. Sponsored by U.S. EPA; U.S. DOE; U.S. Army Toxic and Hazardous Materials Agency; U.S. Army Chemical Research Development and Engineering Center; U.S.A.F.; Florida State Univ.; National Environmental Technology Applications Corp.; and NIOSH
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8403a2e66b9e965acd8dc1326c9edb03521317a6182aa7ccd764b871beb54be2242086fa63cf96bd1d240cd74767c1b346703bb9de1b0309cef9ad99f4f3e8b3
• Download URL:
  https://stacks.cdc.gov/view/cdc/180808/cdc_180808_DS1.pdf
• File Type:
  [PDF - 174.72 KB ]