It is shown that the characteristic working parameters of infrared absorption spectrophotometry of liquids give rise to inevitable reflection and interference effects which grossly distort band shapes and integrated intensities and which seem to account for the long-observed and frustrating variability in apparent peak absorption coefficients.
PottsW. J., Chemical Infrared Spectroscopy (John Wiley & Sons, Inc., New York, 1963), Vol. I, pp. 173, 202.
2.
RamsayD. A., J. Am. Chem. Soc.74, 72 (1952).
3.
JonesNorman R., Japan. J. Chem.21, 609 (1967); Pure Appl. Chem., private communication.
4.
Of course others have discussed reflection losses as a serious problem, notably, MaedaS. and SchatzP. N., J. Chem. Phys.35, 1617 (1961); WhiteJ. U. and WardW. M., Anal. Chem.37, 268 (1965); and KozimaK.SuetakaW., and SchatzP. N., J. Opt. Soc. Am.56, 181 (1966).
5.
GilbyA. C.BurrJ.Jr.KruegerW., and CrawfordB.Jr., J. Phys. Chem.70, 1525 (1966).
6.
ASTM designation Nos. 131–66T and E169–63, “Manual on Recommended Practices in Spectrophotometry,”ASTM, 1966.
7.
PottsW. J., Chemical Infrared Spectroscopy (John Wiley & Sons, Inc., New York, 1963), pp. 117 ff; see also HollenbergJ. L. and DowsD. A., J. Chem. Phys.37, 1300 (1962).
8.
BornM. and WolfE., Principles of Optics (Pergamon Press, Inc., New York, 1964); see also Heavens, Optical Properties of Thin Solid Films (Butterworths Scientific Publications Ltd., London, 1955).
9.
FujiyamaT. and CrawfordB., J. Phys. Chem.72, 2174 (1968).
10.
KruegerW. T.CliffordA. A., and CrawfordB.Jr., private communication.
