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Applied Optics

Applied Optics


  • Vol. 39, Iss. 15 — May. 20, 2000
  • pp: 2480–2486

Development of a cavity ringdown laser absorption spectrometer for detection of trace levels of mercury

Scott Spuler, Mark Linne, Andy Sappey, and Stuart Snyder  »View Author Affiliations

Applied Optics, Vol. 39, Issue 15, pp. 2480-2486 (2000)

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A potential new laser-based air pollution measurement technique, capable of measuring ultralow concentrations of urban air toxins in the field and in real time, is examined. Cavity ringdown laser absorption spectroscopy (CRLAS) holds promise as an air pollution monitor because it is a highly sensitive species detection technique that uses either pulsed or continuous tunable laser sources. The sensitivity results from an extremely long absorption path length and the fact that the quantity measured, the cavity decay time, is unaffected by fluctuations in the laser source. In laboratory experiments, we reach detection limits for mercury of the order of 0.50 parts per trillion. We developed a CRLAS system in our laboratory and measured Hg with the system, investigating issues such as background interference. We report experimental results for mercury detection limits, the dynamic range of the sensor, detection of Hg in an absorbing background of ozone and SO2, and detection of a mercury-containing compound (HgCl2 in this case).

© 2000 Optical Society of America

OCIS Codes
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(230.0230) Optical devices : Optical devices
(300.1030) Spectroscopy : Absorption
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

Original Manuscript: July 19, 1999
Revised Manuscript: January 28, 2000
Published: May 20, 2000

Scott Spuler, Mark Linne, Andy Sappey, and Stuart Snyder, "Development of a cavity ringdown laser absorption spectrometer for detection of trace levels of mercury," Appl. Opt. 39, 2480-2486 (2000)

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  1. A. D. Sappey, E. S. Hill, T. Settersten, M. A. Linne, “Fixed frequency cavity ringdown diagnostic for atmospheric particulate matter,” Opt. Lett. 23, 954–956 (1998). [CrossRef]
  2. C. Hanish, “Where is the mercury deposition coming from?,” Environ. Sci. Technol. 32, 176A–179A (1998). [CrossRef]
  3. Environmental Protection Agency, “Latest findings on national air quality: 1997 status and trends,” (Office of Air Quality, Planning and Standards, Research Triangle Park, N.C., 1998).
  4. W. Fitzgerald, G. Gill, “Subnanogram determination of mercury by two-stage gold amalgamation and gas phase detection applied to atmospheric analysis,” Anal. Chem. 51, 1714–1720 (1979). [CrossRef]
  5. F. Slemr, W. Seiler, C. Eberling, P. Roggendorf, “The determination of total gaseous mercury in air at background levels,” Anal. Chim. Acta 110, 35–47 (1979). [CrossRef]
  6. H. Edner, G. Faris, A. Sunesson, S. Svanberg, “Atmospheric atomic mercury monitoring using differential absorption lidar techniques,” Appl. Opt. 28, 921–930 (1989). [CrossRef] [PubMed]
  7. H. Edner, A. Sunesson, S. Svanberg, L. Uneus, S. Wallin, “Differential optical absorption spectroscopy system used for atmospheric mercury monitoring,” Appl. Opt. 25, 403–409 (1986). [CrossRef] [PubMed]
  8. H. Edner, S. Svanberg, L. Uneus, W. Wendt, “Gas-correlation lidar,” Opt. Lett. 9, 493–495 (1984). [CrossRef] [PubMed]
  9. M. Aldén, H. Edner, S. Svanberg, “Remote measurement of atmospheric mercury using differential absorption lidar,” Opt. Lett. 7, 221–223 (1982). [CrossRef] [PubMed]
  10. J. C. Robbins, “Zeeman spectrometer for measurement of atmospheric mercury,” in Geochemical Exploration, 1972: Proceedings of the Fourth International Geochemical Exploration Symposium, M. J. Jones, ed. (Institution of Mining and Metallurgy, London, 1972), pp. 315–323.
  11. R. Jongma, M. Boogaarts, I. Hollwman, G. Meijer, “Trace gas detection with cavity ring down spectroscopy,” Rev. Sci. Instrum. 66, 2821–2828 (1995). [CrossRef]
  12. A. O’Keefe, D. A. G. Deacon, “Cavity ring-down optical spectrometer for absorption measurements using pulsed laser sources,” Rev. Sci. Instrum. 59, 2544–2551 (1988). [CrossRef]
  13. J. J. Scherer, J. B. Paul, A. O’Keefe, R. J. Saykally, “Cavity ringdown laser absorption spectroscopy: history, development, and application to pulsed molecular beams,” Chem. Rev. 97, 25–51 (1997). [CrossRef] [PubMed]
  14. Y. Nishimura, T. Fujimoto, “λ = 2537A line from a low-pressure mercury discharge lamp emission profile and line absorption by a gas containing a mercury vapor,” Appl. Phys. B 38, 91–98 (1985). [CrossRef]
  15. T. J. Hammond, C. F. Gallo, “Effects of argon atoms on the self-absorption and the intensity of Hg 2537-Å radiation in Hg+Ar discharges,” Appl. Opt. 10, 58–64 (1971). [CrossRef] [PubMed]
  16. R. West, Handbook of Chemistry and Physics, 63rd ed. (CRC Press, Boca Raton, Fla., 1983).
  17. E. Inn, Y. Tanaka, “Absorption coefficient of ozone in the ultraviolet and visible regions,” J. Opt. Soc. Am. 43, 870–873 (1953). [CrossRef]
  18. R. L. DeKock, E. Jan Baerends, P. M. Boerrigter, R. Hengelmolen, “Electronic structure and bonding of Hg(CH3)2, Hg(CN)2, Hg(CH3)(CN), Hg(CCCH3)2 and Au(Pme3) (CH3),” J. Am. Chem. Soc. 106, 3387–3392 (1984). [CrossRef]
  19. A. Bzezinska, J. Van Loon, D. Williams, K. Oguma, K. Fuwa, I. H. Haraguchi, “A study of the determination of dimethylmercury and methylmercury chloride in air,” Spectrochim. Acta Part B 38, 1339–1346 (1983). [CrossRef]

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