Quantitative analytical method and apparatus for spectrometric a

Details Quantitative analytical method and apparatus for spectrometric a Quantitative analytical method and apparatus for spectrometric a

1992-02-14

1994-04-19

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

356319, 356326, 25033901, G01B 902

Patent

active

053050762

ABSTRACT:
A method and apparatus to determine the constituent ingredients in a sample by a spectroscopic procedure is disclosed. A Fourier transformation infrared spectrometer can secure data of a power spectrum of a sample and data of a power spectrum of a reference. A absorption spectrum of the sample from this respective data can be determined. A set of wave number points across the absorption spectrum of the sample that exhibit a predetermined linear characteristic can be selected and the absorption spectrum values corresponding to the set of wave number points can be used to calculate the concentrations of the constituent ingredients. A plurality of sets of wave number points can also be predetermined for a specific sample and limit values can be stored and compared to pick the most desirable set of wave number points for calculating the concentration of the constituent ingredients.

REFERENCES:
patent: 4927269 (1990-05-01), Keens et al.
L. de Galan, "Analytical Spectrometry", London (1971), pp. 73-84.
P. R. Griffith et al., "Fourier Transform Infrared Spectrometry", New York (1986) Chapter 10, Quantitative Analysis, pp. 338 to 368.
W. Bruegel, "Einfuehrung in the Ultrarotspectroskopie", Darmstadt (1962), pp. 314 to 343.
A. L. Smith, "Applied Infrared Spectroscopy", New York (1979), pp. 219 to 250.

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