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Science 2 July 1971:
Vol. 173. no. 3991, pp. 45 - 47
DOI: 10.1126/science.173.3991.45
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Articles

Nitric Oxide Air Pollution: Detection by Optoacoustic Spectroscopy

L. B. Kreuzer 1 and C. K. N. Patel 2

1 Bell Telephone Laboratories, Inc. Murray Hill, New Jersey 97974
2 Bell Telephone Laboratories, Inc. Holmdel, New Jersey 07733

Nitric oxide is detected by a new technique in which tunable infrared radiation from a spin-flip Raman laser is used to measure the absorption spectrumn of a gas sample by optoacoustic spectroscopy. This technique is sensitive enough to detect a concentration of 0.01 part per million of nitric oxide pollution in air samples.


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