Advertisement

Applied physics

, Volume 7, Issue 4, pp 287–293 | Cite as

Infrared absorption spectroscopy of aqueous solutions with a CO2 laser

  • G. Kraus
  • Max Mater
Contributed Papers

Abstract

We measured small concentrations of molecules and ions in aqueous solutions using a double-beam spectrometer with a CO2 laser as a light source. The detection sensitivity for inorganic anions, ethyl alcohol, and glucose is between 8 and 35 mg/l. The considerably improved performance of the laser spectrometer compared to a conventional infrared spectrometer is discussed. The sulphate concentration in the sewage of a textile plant was determined in good agreement with standard chemical methods. A distinct narrowing of the alcohol line at 9.56 μm by a factor of 3 was observed in dilute solutions of ethyl alcohol in water.

Index Headings

IR spectroscopy CO2 laser Aqueous solutions 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    H.Volkmann:Handbuch der Infrarot-Spektroskopie (Verlag Chemie, Weinheim 1972)Google Scholar
  2. 2.
    W.Brügel:Einführung in die Ultrarotspektroskopie (Dr. Dietrich Steinkopff Verlag, Darmstadt 1969)Google Scholar
  3. 3.
    J.D.S.Goulden, D.J.Manning: J. Sci. Fd. Agric.18, 466 (1967)CrossRefGoogle Scholar
  4. 4.
    G.Kraus, M.Maier, NilsKaiser: Opt. Commun.11, 175 (1974)CrossRefADSGoogle Scholar
  5. 5.
    NilsKaiser: InModern Techniques in Physiological Sciences, ed. by J.F.Gross, R.Kaufmann and E.Wetterer (Academic Press N.Y. 1973), p. 237Google Scholar
  6. 6.
    ITHACO Application Note IAN-33 (1973)Google Scholar
  7. 7.
    J.D.S.Goulden, D.J.Manning: Spectrochim. Acta23A, 2249 (1967)Google Scholar
  8. 8.
    D.F.Irish: InIonic Interactions. From Dilute Solutions to Molten Salts, ed. by S.Petrucci (Academic Press, N.Y. 1971), Vol. IIGoogle Scholar
  9. 9.
    K.Höll:Wasser (de Gruyter Verlag, Berlin 1970)Google Scholar
  10. 10.
    B.Schrader, W.Meier:DMS Raman/IR Atlas of Organic Compounds, Vol 1 (Verlag Chemie, Weinheim 1974)Google Scholar
  11. 11.
    J.D.S.Goulden Spectr. Chim. Acta9, 657 (1957)Google Scholar
  12. 12.
    Beckman Instruments GmbH (private communication)Google Scholar
  13. 13.
    S.F.Baldwin, C.W.Brown: Water Res.6, 1601 (1972)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • G. Kraus
    • 1
  • Max Mater
    • 2
  1. 1.Physik-Department der Technischen Universität MünchenMünchenFed. Rep Germany
  2. 2.Fachbereich Physik der Universität RegensburgRegensburgFed. Rep. Germany

Personalised recommendations