Applied Physics B

, Volume 85, Issue 2–3, pp 257–263

High precision determinations of NH3 concentration by means of diode laser spectrometry at 2.005 μm

Article

Abstract

This paper reports on the development of a compact analyzer for ammonia monitoring in air, based on a distributed feedback diode laser at 2.005 μm. A dual-beam long-path technique was combined with wavelength modulation detection of absorption in order to reach a detection limit of about 25 ppb, with a 0.2-Hz equivalent noise bandwidth. Retrieval of NH3 concentration was accomplished through a careful spectra analysis procedure based on the formalism of Fourier expansion of the 2nd harmonic signals, also taking into account residual-amplitude-modulation effects. The system was tested on certified gas-mixtures and revealed a good performance in terms of accuracy and reproducibility. Particularly, the short-term precision was found to be about 1 ‰, for NH3 mixing ratios of 10 ppm. Finally, the possibility to make use of the analyzer for measurements of ammonia fluxes from soils is discussed.

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References

  1. 1.
    P.A. Roelle, V.P. Aneja, Atmos. Environ. 36, 1087 (2002)CrossRefGoogle Scholar
  2. 2.
    M.A. Sutton, D. Fowler, Environ. Pollut. 119, 7 (2002)CrossRefGoogle Scholar
  3. 3.
    J.K. Schjoerring, S. Husted, M.M. Poulsen, Atmos. Environ. 32, 507 (1998)CrossRefGoogle Scholar
  4. 4.
    R. Peeters, G. Berden, A. Apituley, G. Meijer, Appl. Phys. B 71, 231 (2000)CrossRefADSGoogle Scholar
  5. 5.
    D.S. Baer, J.B. Paul, M. Gupta, A. O’Keefe, Appl. Phys. B 75, 261 (2002)CrossRefADSGoogle Scholar
  6. 6.
    A.A. Kosterev, F. Tittel, Appl. Opt. 43, 6213 (2004)CrossRefADSGoogle Scholar
  7. 7.
    M.E. Webber, R. Klaps, F.V. Englich, F.K. Tittel, J.B. Jeffries, R.K. Hanson, Appl. Opt. 40, 4395 (2001)CrossRefADSGoogle Scholar
  8. 8.
    L. Sandström, S. Bäckström, H. Ahlberg, S. Höjer, A.G. Larsson, Infrared Phys. Technol. 39, 69 (1998)CrossRefADSGoogle Scholar
  9. 9.
    R. Claps, F.V. Englich, D.P. Leleux, D. Richter, F.K. Tittel, R.F. Curl, Appl. Opt. 40, 4387 (2001)CrossRefADSGoogle Scholar
  10. 10.
    A.A. Kosterev, R.F. Curl, F.K. Tittel, R. Koehler, C. Gmachl, F. Capasso, D.L. Sivco, A.Y. Cho, Appl. Opt. 41, 573 (2002)CrossRefADSGoogle Scholar
  11. 11.
    L.S. Rothman, D. Jacquemart, A. Barbe, D.C. Benner, M. Birk, L.R. Brown, M.R. Carleer, C. Chackerian Jr., K. Chance, L.H. Coudert, V. Dana, V.M. Devi, J.-M. Flaud, R.R. Gamache, A. Goldman, J.-M. Hartmann, K.W. Jucks, A.G. Maki, J.-Y. Mandin, S.T. Massie, J. Orphal, A. Perrin, C.P. Rinsland, M.A.H. Smith, J. Tennyson, R.N. Tolchenov, R.A. Toth, J. Vander Auwera, P. Varanasi, G. Wagner, J. Quantum Spectrosc. Radiat. Transf. 96, 139 (2005)CrossRefADSGoogle Scholar
  12. 12.
    A. Schmohl, A. Miklos, P. Hess, Appl. Opt. 40, 2571 (2001)CrossRefADSGoogle Scholar
  13. 13.
    P. Kluczynski, O. Axner, Appl. Opt. 38, 5803 (1999)CrossRefADSGoogle Scholar
  14. 14.
    P. Kluczynski, J. Gustafsson, A.M. Lindberg, O. Axner, Spectrochim. Acta B 56, 1277 (2001)CrossRefADSGoogle Scholar
  15. 15.
    G. Gagliardi, R. Restieri, G. De Biasio, P. De Natale, F. Cotrufo, L. Gianfrani, Rev. Sci. Instrum. 72, 4228 (2001)CrossRefADSGoogle Scholar
  16. 16.
    J.S. Warland, G.M. Dias, G.W. Thurtell, Environ. Pollut. 114, 215 (2001)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Dipartimento di Scienze Ambientali della Seconda Università di NapoliCNISM – Unità di Napoli 2CasertaItaly

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