Development of an Inexpensive RGB Color Sensor for the Detection of Hydrogen Cyanide Gas

Details

• Alternative Title:
  ACS Sens
• Personal Author:
  Greenawald, Lee A. ; Boss, Gerry R. ; Snyder, Jay L. ; Reeder, Aaron ; Bell, Suzanne
• Description:
  An inexpensive red, green, blue (RGB) color sensor was developed for detecting low ppm concentrations of hydrogen cyanide gas. A piece of glass fiber filter paper containing monocyanocobinamide [CN(H|O)Cbi] was placed directly above the RGB color sensor and an on chip LED. Light reflected from the paper was monitored for RGB color change upon exposure to hydrogen cyanide at concentrations of 1.0-10.0 ppm as a function of 25%, 50%, and 85% relative humidity. A rapid color change occurred within 10 s of exposure to 5.0 ppm hydrogen cyanide gas (near the NIOSH recommended exposure limit). A more rapid color change occurred at higher humidity, suggesting a more effective reaction between hydrogen cyanide and CN(H|O)Cbi. The sensor could provide the first real time respirator end-of-service-life alert for hydrogen cyanide gas.
• Subjects:
  Article Biosensing Techniques Cobamides Cobinamide Color Coloring Agents End-of-service-life Indicator Gases Humans Hydrogen Cyanide Limit Of Detection Paper Paper-based Sensor Respirator Ventilators, Mechanical

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• Source:
  ACS Sens. 2(10):1458-1466
• Pubmed ID:
  28967741
• Pubmed Central ID:
  PMC10083731
• Document Type:
  Journal Article
• Funding:
  CC999999/ImCDC/Intramural CDC HHSUnited States/ ; U01 NS058030/NS/NINDS NIH HHSUnited States/
• Volume:
  2
• Issue:
  10
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:1d02447f8b2f5b503b38f99ece6ffca58ce2dac2e072f7655506d73c6109e81e
• Download URL:
  https://stacks.cdc.gov/view/cdc/126883/cdc_126883_DS1.pdf
• File Type:
  [PDF - 1.55 MB ]