Abstract
A compact and portable diode-laser spectrometer is developed for high-precision measurements of the 13CO2/12CO2 isotope ratio. Ro-vibrational transitions belonging to different combination bands, around 2.008 μm, are detected for the two isotopomers, using wavelength-modulation spectroscopy with first-harmonic detection. The determination of the isotope ratio is performed through a comparison between the spectra, simultaneously acquired in two different multiple-reflection cells designed to contain the sample and reference gases. The reproducibility of our method is extensively investigated over different time scales. In particular, the short-term precision of the isotope ratio determination is found to be 0.03%. We discuss the presence of possible systematic shifts in the δ-v alue and optimise the operating conditions to ensure accuracy within the precision level. A possible use for in-situ measurements in volcanic gases is also discussed.
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J. Balesdent, A. Mariotti, B. Guillet: Soil Biol. Biochem. 19, 25 (1987)
S.W. Leavitt, E.A. Paul, E. Pendall, P.J. Pinter, B.A. Kimball: Nucl. Instrum. Methods B 123, 451 (1997)
G. Gagliardi, R. Restieri, G. Casa, L. Gianfrani: Opt. Lasers Eng. 37, 131 (2002)
M.H. Thiemens, T. Jackson, E.C. Zipf, P.W. Erdman, C. van Egmond: Science 270, 969 (1995)
D.E. Murnick, B.J. Peer: Science 263, 945 (1994)
E.R.T. Kerstel, R. van Trigt, N. Dam, J. Reuss, H.A.J. Meijer: Anal. Chem. 71, 5297 (1999)
P. Bergamaschi, M. Schupp, G.W. Harris: Appl. Opt. 33, 7704 (1994)
J.F. Becker, T.B. Sauke, M. Loewenstein: Appl. Opt. 31, 1921 (1992)
M. Erdèlyi, D. Richter, F.K. Tittel: Appl. Phys. B 75, 289 (2002)
A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, A.Y. Cho: Opt. Lett. 24, 1762 (1999)
G. Gagliardi, F. Tamassia, P. De Natale, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, A.Y. Cho: Eur. Phys. J. D 19, 327 (2002)
E.R.T. Kerstel, G. Gagliardi, L. Gianfrani, H.A.J. Mejer, R. van Trigt, R. Ramaker: Spectrochim. Acta Part A 58, 2389 (2002)
K. Uehara, K. Yamamoto, T. Kikugawa, N. Yoshida: Sens. Actuators B 74, 173 (2001)
K. Uehara, K. Yamamoto, T. Kikugawa, S. Toyoda, K. Tsuji, N. Yoshida: Sens. Actuators B 90, 250 (2003)
H. Edner, P. Ragnarson, S. Svanberg, E. Wallinder, R. Ferrara, R. Cioni, B. Raco, G. Taddeucci: J. Geophys. Res. 99, 18827 (1994)
R. Chaux, B. Lavorel: Appl. Phys. B 72, 237 (2001)
J.A. Silver: Appl. Opt. 31, 707 (1992)
L.S. Rothmann, C.P. Rinsland, A. Goldman, S.T. Massie, D.P. Edwards, J.-Y. Mandin, J. Schroeder, A. McCann, R.R. Gamache, R.B. Wattsin, K. Yoshino, K.V. Chance, K.W. Juck, L.R. Brown, V. Nemtchechin, P. Varanasi: J. Quant. Spectrosc. Radiat. Transfer 60, 665 (1998)
C. Panichi, G. Volpi: J. Volcanol. Geothermal Res. 91, 321 (1999)
A. Castrillo, G. Gagliardi, G. Casa, L. Gianfrani: Phys. Rev. A 67, 062503 (2003)
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42.62.Fi; 42.55.Px; 33.20.Ea
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Gagliardi , G., Castrillo , A., Iannone , R. et al. High-precision determination of the 13CO2/12CO2 isotope ratio using a portable 2.008-μm diode-laser spectrometer. Appl. Phys. B 77, 119–124 (2003). https://doi.org/10.1007/s00340-003-1240-5
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DOI: https://doi.org/10.1007/s00340-003-1240-5