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Laser detection of pollution.

C K Patel

    Science (New York, N.Y.)
    |October 13, 1978
    PubMed
    Summary
    This summary is machine-generated.

    High-power tunable lasers enable spectroscopic analysis for identifying atmospheric trace gases. This review covers laser Raman, long-path, and optoacoustic detection methods for reliable air pollution monitoring.

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    Area of Science:

    • Environmental Science
    • Analytical Chemistry
    • Laser Spectroscopy

    Background:

    • Spectroscopic analysis is crucial for identifying and quantifying gaseous components.
    • Advancements in high-power tunable lasers have enhanced atmospheric trace constituent detection.
    • Laser-based spectroscopic techniques offer practical solutions for environmental monitoring.

    Purpose of the Study:

    • To review current laser-based spectroscopic methods for atmospheric pollution detection.
    • To highlight the utility of these techniques in practical applications.
    • To discuss the rapid progress and reliability of laser detection methods.

    Main Methods:

    • Review of three primary laser detection modes: long-path measurements, laser Raman (differential absorption) measurements, and optoacoustic detection.

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  • Focus on the application of tunable laser technology in spectroscopy.
  • Analysis of data acquisition and reliability for air pollution monitoring.

    • Main Results:

    • Laser spectroscopic techniques provide effective means for detecting trace atmospheric constituents.
    • Long-path, laser Raman, and optoacoustic methods are currently employed for pollution monitoring.
    • Significant advancements have led to the routine acquisition of reliable air pollution data.

    Conclusions:

    • Laser-based spectroscopic analysis is a powerful tool for atmospheric pollution monitoring.
    • The reviewed techniques offer reliable and practical solutions for environmental analysis.
    • Continued rapid progress in the field promises further improvements in air quality assessment.