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