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Detection of sulphur dioxide in stack plume by laser Raman radar

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Abstract

Laser Raman radar offers a promising approach to the remote sensing of atmospheric pollutants in stack plume. An analysis revealed that the combination of the second harmonic of a Nd:YAG laser, a synchronous single photoelectron counting (SSPC) scheme, and narrow passband interference filter employed for light source, signal processor, and separation of Raman-scattered light respectively gave the most sensitive system for stack effluent monitoring. Using a laser Raman radar constructed on the basis of the analysis, the concentration of SO2 in the plume emitted from a 150 m high stack of a power plant was measured at a distance of 228 m.

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Authors and Affiliations

  1. Mitsubishi Electric Corporation, Kamakura Works, Kamakura, Japan

    S. Nakahara, K. Ito, S. Ito & A. Fuke

  2. Air Pollution and Atmospheric Research Co Ltd, Minato-ku, Tokyo, Japan

    S. Komatsu

  3. Research Institute of Electrical Communication, Tohoku University, Sendai, Japan

    H. Inaba & T. Kobayasi

Authors
  1. S. Nakahara
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  2. K. Ito
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  3. S. Ito
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  4. A. Fuke
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  5. S. Komatsu
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  6. H. Inaba
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  7. T. Kobayasi
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Additional information

This paper partly includes the material which was presented at the 1971 IEEE/OSA Conference on Laser Engineering and Applications (CLEA), Washington DC, USA, June 1971, as an invited paper (No. 19-2) in the session on Atmospheric Pollution.

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Nakahara, S., Ito, K., Ito, S. et al. Detection of sulphur dioxide in stack plume by laser Raman radar. Opto-electronics 4, 169–177 (1972). https://doi.org/10.1007/BF01421181

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  • DOI: https://doi.org/10.1007/BF01421181

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