LASER IR SYSTEM ACCURATELY ANALYZES AUTO EXHAUST GASES

Scientists at General Motors Research Laboratories have built a laser IR system that can make fast and accurate measurements of all the "species of interest" in the exhaust stream--i.e., ammonia, hydrocarbons, and the oxides of carbon, sulfur, and nitrogen. The advent of high-resolution, tunable IR laser diodes solved all the problems of conventional IR spectrometry--in principle. The high-intensity beam allowed evaluation in a fraction of a second. Exact frequencies could be chosen to determine presence and quantity of a selected gas, with no interferences.

• Corporate Authors:

  American Chemical Society

  1155 16th Street, NW
  Washington, DC  United States  20036
• Publication Date: 1980-8-4

Media Info

• Pagination: p. 27
• Serial:
  • Chemical and Engineering News
  • Volume: 58
  • Issue Number: 31
  • Publisher: American Chemical Society

Subject/Index Terms

• TRT Terms: Ammonia; Carbon dioxide; Carbon monoxide; Exhaust gases; Hydrocarbons; Lasers; Measurement; Motor vehicles; Nitric oxide; Nitrogen oxides; Spectrometers; Sulfur oxides
• Old TRIS Terms: Laser applications
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00319416
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 15 1981 12:00AM