A Rapid Response SAW-GC Chemical Monitor for Low-Level Vapor Detection.

Details

• Personal Author:
  Elton JA ; Houle JF
• Description:
  The use of gas chromatography combined with a surface acoustic wave (SAW) sensor for vapor detection at low levels was described. Vapor plugs eluted from the gas chromatography column were individually injected onto a SAW sensor. A SAW sensor was first tested as an individual sensor with each vapor of interest at one or more concentrations. The sensor was then incorporated into the chemical vapor monitor (CVM), and system testing was performed. Selective coatings of ethyl-cellulose and fluoropolyol on SAW sensors were prepared using proprietary thin film coating techniques. The results indicated that SAW technology can be used to detect dimethyl- methylphosphonate (756796) and chloroethyl-ethylsulfide (693072) at concentrations below 1mg/m3 in less than 2 minutes. Methyl-benzoate (93583) and phenyl-acetone (103797) could also be detected at concentrations below 1mg/m3. Extrapolated detection limits and response times were given for both the SAW sensor experiments and the CVM experiments.
• Subjects:
  Accidents, Occupational Environmental Monitoring Environmental Pollution Occupational Health Safety
• Keywords:
  Air-quality-monitoring Chemical-warfare-agents Chromatographic-analysis Environmental-contamination Environmental-pollution Organic-vapors 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:
  649-652
• NIOSHTIC Number:
  nn:00210440
• Citation:
  NIOSH 1991 Feb:649-652
• CAS Registry Number:
  Dimethyl methylphosphonate (CAS RN 756-79-6) ; 2-Chloroethyl ethyl sulfide (CAS RN 693-07-2) ; Methyl benzoate (CAS RN 93-58-3) ; Phenylacetone (CAS RN 103-79-7)
• 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:dc2af89a68bb918e3f2b32f36e5ebf5bba20a3c0725d2a32ee7d428a7f530f537a03a0a7cbb63aa89ec280b4a1f14087b73a19d721bfbcaa59800906f060e628
• Download URL:
  https://stacks.cdc.gov/view/cdc/180807/cdc_180807_DS1.pdf
• File Type:
  [PDF - 939.49 KB ]