Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Chemical analysis
Patent
1997-10-09
1998-12-15
Trammell, James P.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Chemical analysis
702 23, 702 27, 702 30, 702 85, 702 90, 702172, 356301, 356346, 2502521, 25033907, 25033909, 25033906, G01J 344, G01N 2165, G01N 3300
Patent
active
058506233
ABSTRACT:
A method for providing a standard Raman spectrum from a sample uses a particular Raman spectrometry apparatus or any similar Raman spectrometry apparatus, which is used to simultaneously irradiate a reference material and at least one sample, thereby obtaining their respective convolved Raman spectra. Using a defined standard energy dispersion characteristic and a standard Raman spectrum of the reference material, a convolution function is determined and applied to produce a deconvolved Raman spectrum of the sample. This deconvolved spectrum is multiplied by a defined standard photometric response function to produce a standard Raman spectrum of the sample. A method for providing an accurate and precise quantitative analysis of the chemical composition and/or physical properties of an unknown sample uses the standard Raman spectra of a plurality of known samples to construct a normalized calibration, which is applied to a standard Raman spectrum of the unknown sample to produce an accurate and precise quantitative analysis thereof, using any similar Raman spectrometry apparatus.
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Alsmeyer Daniel Charles
Carman, Jr. Howard Smith
Garrett Aaron Wayne
Juarez-Garcia Carlos Humberto
Nicely Vincent Alvin
Dam Tuan Q.
Eastman Chemical Company
Trammell James P.
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