Surface Acoustic Wave (SAW) Personal Monitor for Toxic Gases.

Details

• Personal Author:
  Jarvis NL ; Lint JR ; Wohltjen H
• Description:
  Surface Acoustic Wave (SAW) coatings were evaluated for use in personal monitors for toxic gases. A demonstration model was developed which had four sensors. The unit weighed about 2 pounds. The sensor coatings reacted irreversibly with toxic gases so that total exposure could be measured. Gases studied included hydrogen- chloride (7647010), nitrogen-dioxide (10102440) (NO2), sulfur- dioxide (7446095), hydrogen-sulfide (7783064), and ammonia (7664417). It was noted that for each toxic gas except NO2 a relatively large and easily measured SAW response was observed when an appropriate coating was exposed to small concentrations. Aside from NO2, each toxic gas studied could be detected by a SAW sensor well below the OSHA action level when monitored over a period of 1 minute or less. The findings of the study indicated that: SAW sensors and necessary support electronics can be appropriately miniaturized; a number of successful coatings are readily available and others can be identified or developed; and SAW sensors are sensitive enough to meet the requirements. The authors conclude that a SAW personal monitor for toxic agents could readily be developed. Such a small, sensitive, and rugged solid state instrument will likely have many other applications in the future of monitoring systems.
• Subjects:
  Accidents, Occupational Asbestos Epidemiology Inorganic Chemicals Lung Lung Diseases Mortality Neoplasms Occupational Health Respiratory System Respiratory Tract Diseases Safety Smokers Tobacco Products

  More +
• Keywords:
  Acid-gases Air-monitoring Monitoring-systems Nitrogen-oxides Occupational-exposure Sulfur-oxides Toxic-gases Work-environment
• 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:
  73-83
• NIOSHTIC Number:
  nn:00210413
• Citation:
  NIOSH 1991 Feb:73-83
• CAS Registry Number:
  Hydrochloric acid (CAS RN 7647-01-0) ; Nitrogen dioxide (CAS RN 10102-44-0) ; Sulfur dioxide (CAS RN 7446-09-5) ; Hydrogen sulfide (CAS RN 7783-06-4) ; Ammonia (CAS RN 7664-41-7)
• 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; E.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-512:325de6b6a2da458e0f87bb262a1405617772e7d2460645fe9f91afdeed6ee5b0025c40c5b54b243f4ee0d7ed2ab0ff420650a9e702ef490f6792af63e599fc5f
• Download URL:
  https://stacks.cdc.gov/view/cdc/180780/cdc_180780_DS1.pdf
• File Type:
  [PDF - 936.64 KB ]