Development of a hydrogen sulfide end-of-service-life indicator for respirator cartridges using cobinamide

Details

• Personal Author:
  Bell S ; Boss GR ; Greenawald LA ; Reeder A
• Description:
  An inexpensive paper-based sensor was developed for detecting low ppm concentrations of hydrogen sulfide gas. A piece of filter paper containing aquohydroxocobinamide [OH(H2O)Cbi] was placed on the end of a bifurcated optical fiber, and the reflectance spectrum of the OH(H2O)Cbi was monitored during exposure to 10.0 ppm hydrogen sulfide gas (NIOSH recommended exposure limit). Reaction of sulfide (HS-) yielded an increase in reflectance from 400-450 nm, and decrease from 470-550 nm. Spectral changes were monitored as a function of time at 25, 50, and 85% relative humidity. Spectral shifts at high-er humidity suggested reduction of the Cbi(III) compound. The sensor was used to detect hydrogen sulfide breakthrough from respirator carbon beds and results correlated well with a standard electrochemical detector. The simple paper-based sensor could provide a real-time end-of-service-life alert for hydrogen sulfide gas. [Description provided by NIOSH]
• Subjects:
  Humidity Occupational Health Respiratory Protective Devices Safety
• Keywords:
  Aquohydroxocobinamide Author Keywords: Optical Sensor Diffuse Reflectance End-of-service-life Indicator Filters Gases Gas Indicators Hydrogen Sulfide Respirators Sensors
• ISSN:
  0925-4005
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 3 ; OSHA Region 9 ; Pennsylvania ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  230
• NIOSHTIC Number:
  nn:20047738
• Citation:
  Sens Actuators B Chem 2016 Jul; 230:658-666
• Contact Point Address:
  Lee A. Greenawald, National Institute for Occupational Safety and Health,1095 Willowdale Road, M/S 1904, Morgantown, WV 26505
• Email:
  lgreenaw@mix.wvu.edu
• CAS Registry Number:
  Hydrogen sulfide (CAS RN 7783-06-4)
• Federal Fiscal Year:
  2016
• Peer Reviewed:
  True
• Source Full Name:
  Sensors and Actuators B: Chemical
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:02475063fb34be3799e235b53173d682bc4faf391ca864a441aac29494860e675fd15d46555d783debe650318e1c940c538c40351d536646244b54b9b3a78aaf
• Download URL:
  https://stacks.cdc.gov/view/cdc/202735/cdc_202735_DS1.pdf
• File Type:
  [PDF - 1.48 MB ]