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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 15 — May. 20, 1998
  • pp: 3172–3175

Detection of benzene and other gases with an open-path, static Fourier-transform UV spectrometer

Brett A. Patterson, James P. Lenney, Wilson Sibbett, Bill Hirst, Nigel K. Hedges, and Miles J. Padgett  »View Author Affiliations


Applied Optics, Vol. 37, Issue 15, pp. 3172-3175 (1998)
http://dx.doi.org/10.1364/AO.37.003172


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Abstract

Releases of benzene and other gases have been detected and quantified using a novel optical, open-path instrument based on a deuterium light source and a static Fourier-transform spectrometer. The spectrometer uses Wollaston prisms to form an interferogram in the spatial domain that is recorded by use of a detector array. The instrument is designed to operate in the ultraviolet region of the spectrum between 200 and 270 nm, which coincides with strong absorption features in the spectra of many gases of environmental and health interest. Using the instrument with a 5-s measurement period provides a path-integrated concentration sensitivity to benzene of 2 parts in 106 times meter, which corresponds to a 20-parts in 109 detection limit over a typical path length of 100 m.

© 1998 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms

History
Original Manuscript: October 27, 1997
Revised Manuscript: February 2, 1998
Published: May 20, 1998

Citation
Brett A. Patterson, James P. Lenney, Wilson Sibbett, Bill Hirst, Nigel K. Hedges, and Miles J. Padgett, "Detection of benzene and other gases with an open-path, static Fourier-transform UV spectrometer," Appl. Opt. 37, 3172-3175 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-15-3172


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References

  1. Motor Fuels (Compositions and Content) Regulations, which incorporates the levels specified in European Directive No. 85/210/EEC (Her Majesty’s Stationery Office, London, 1994).
  2. R. J. Bell, Introductory Fourier-Transform Spectroscopy (Academic, New York, 1972).
  3. Constructed by Siemens Environmental Systems, Ltd, Sopers Lane, Poole, Dorset BH17 7ER, England.
  4. J. Courtial, B. A. Patterson, W. Hirst, A. R. Harvey, A. J. Duncan, W. Sibbett, M. J. Padgett, “Static Fourier-transform ultraviolet spectrometer for gas detection,” Appl. Opt. 36, 2813–2817 (1997). [CrossRef] [PubMed]
  5. M. J. Padgett, A. R. Harvey, A. J. Duncan, W. Sibbett, “Single-pulse Fourier-transform spectrometer having no moving parts,” Appl. Opt. 33, 6035–6040 (1994). [CrossRef] [PubMed]
  6. M. J. Padgett, A. R. Harvey, “A static Fourier-transform spectrometer based on Wollaston prisms,” Rev. Sci. Instrum. 66, 2807–2811 (1995). [CrossRef]
  7. Deuterium Lamp Y02, Cathodeon, Ltd, Nuffield Road, Cambridge CB4 1TW, England.
  8. Opticon, 76 Treble Cove Road, Billerica, Mass. 01862.
  9. UV filter 260-B-1D, Acton Research Corp., Acton, Mass. 10720.
  10. D. V. Lindley, Introduction to Probability and Statistics from a Bayesian Viewpoint (Cambridge U. Press, Cambridge, 1965). [CrossRef]
  11. W. H. Press, S. A. Teukolsky, W. T. Vetterling, B. P. Flannery, Numerical Recipies in C, 2nd ed. (Cambridge U. Press, Cambridge, England, 1992).
  12. Spectrum obtained from AEA Technology, plc, 551 Harwell, Didcot OX11 0RA, England.
  13. Expert Panel on Air-Quality Standards, Benzene;Department of the Environment, ISBN 0-11-7528-59-5 (Her Majesty’s Stationery Office, London, 1994).

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