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Techniques for detection of molecular pollutants by absorption of laser radiation

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Laser Monitoring of the Atmosphere

Part of the book series: Topics in Applied Physics ((TAP,volume 14))

Abstract

The absorption of laser radiation can be employed in a variety of ways for pollutant detection and monitoring. Under point-sampling conditions, where sample pressure can be reduced, or during in situ measurements at high altitudes, where spectral lines are narrow, very specific and sensitive detection can be accomplished. Short-path in situ monitoring of effluents at their sources can be performed; and while not as free from potential interferences at atmospheric pressure, it nevertheless, offers the advantage that the stream under investigation is not disturbed by the measurement. This is particularly important for some of the more reactive species. Finally, long-path monitoring yields information as to the average pollutant concentration over a relatively long atmospheric path—an important parameter for the evaluation of various mathematical models being developed for regional pollution prediction. Techniques based on long-path spectral information are being developed to provide continuous surveillance of the troposphere and stratosphere from either airborne or ground-based instrumentation.

With 17 Figures

This work was supported by the National Science Foundation (RANN), the U.S. Environmental Protection Agency, and the Department of the Air Force.

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  1. E. D. Hinkley
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Hinkley, E.D., Ku, R.T., Kelley, P.L. (1976). Techniques for detection of molecular pollutants by absorption of laser radiation. In: Hinkley, E.D. (eds) Laser Monitoring of the Atmosphere. Topics in Applied Physics, vol 14. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-07743-X_20

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  • DOI: https://doi.org/10.1007/3-540-07743-X_20

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