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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 66, Iss. 8 — Aug. 1, 1976
  • pp: 830–836

Complex refractive index in the infrared for NaCl, NaNO3, and NaHCO3 in water

Marvin R. Querry, Wayne E. Holland, and Richard C. Waring  »View Author Affiliations


JOSA, Vol. 66, Issue 8, pp. 830-836 (1976)
http://dx.doi.org/10.1364/JOSA.66.000830


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Abstract

Relative specular reflectances of individual 0.5M aqueous solutions of NaNO3, NaHCO3, NaCl, and of 0.25M NaCl were measured in the 500–5000 cm-1(2–20 µm) region of the infrared for linearly polarized radiant flux having the electric field vector perpendicular to the plane of incidence. Distilled water was the reflectance standard. The angle of incidence was 70.03° ± 0.23°. Kramers-Kronig analysis of the relative reflectance spectra provided phase-difference spectra for the aqueous solutions and a tabulation of spectral values for the complex refractive index n + ik. The strengths of selected infrared active vibrational bands of the molecular anions NO3- and HCO3- were determined by integrating values for their molecular extinction coefficients over spectral regions of the bands.

© 1976 Optical Society of America

Citation
Marvin R. Querry, Wayne E. Holland, and Richard C. Waring, "Complex refractive index in the infrared for NaCl, NaNO3, and NaHCO3 in water," J. Opt. Soc. Am. 66, 830-836 (1976)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-66-8-830


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References

  1. M. R. Querry, R. C. Waring, W. E. Holland, G. M. Hale, and W. Nijm, "Optical constants in the infrared for aqueous solutions of NaCl," J. Opt. Soc. Am. 62, 849–855 (1972).
  2. M. R. Querry, R. C. Waring, W. E. Holland, L. M. Earls, M. D. Herrman, W. Nijm, and G. M. Hale, "Optical constants in the infrared for K2SO4, NH4H2PO4, and H2SO4 in water," J. Opt. Soc. Am. 64, 39–46 (1974).
  3. D. E. Hobson, Jr. and D. Williams, "Infrared spectral reflectance of sea water," Appl. Opt. 10, 2372–2373 (1971).
  4. M. R. Querry, W. E. Holland, R. C. Waring, and L. M. Earls, "Reflectance and optical constants in the infrared for selected samples of environmental waters," Bull. Am. Phys. Soc. 18, 609 (1973).
  5. G. M. Hale, W. E. Holland, and M. R. Querry, "Kramers-Kronig analysis of relative reflectance spectra measured at an oblique angle," Appl. Opt. 12, 48–51 (1973).
  6. G. M. Hale, and M. R. Querry, "Optical constants of water in the 200-nm to 200-µm wavelength region," Appl. Opt. 12, 555–563 (1973).
  7. J. B. Bryan and B. Curnutte, "A normal coordinate analysis based on the local structure of liquid water," J. Mol. Spectry. 41, 512–533 (1973).
  8. B. Curnutte and J. Bandekar, "The intramolecular vibrations of the water molecule in the liquid state," J. Mol. Spectry. 41, 500–511 (1972).
  9. D. L. Bernitt, K. O. Hartman, and I. C. Hisatsune, "Infrared spectra of isotopic bicarbonate monomer ions," J. Chem. Phys. 42, 3553–3558 (1965).

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