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ON-LINE QUANTITATIVE ANALYSIS OF CHEMICAL COMPOSITIONS BY RAMAN SPECTROMETRY
ON-LINE QUANTITATIVE ANALYSIS OF CHEMICAL COMPOSITIONS BY RAMAN SPECTROMETRY
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机译：用拉曼光谱法对化学成分进行在线定量分析
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摘要
A method for quantitatively monitoring in situ by Raman spectrometry one or more selected constituents of a chemical compositioncomprises: simultaneously irradiating with a substantially monochromatic radiation source a reference material and a chemical compositioncontaining one or more constituents, the radiation being transmitted from the source to the chemical composition by an excitation conduitconnecting the source to an optical probe that interfaces with the composition; simultaneously acquiring at more than one wavelengthconvolved Raman spectra of the reference material and the chemical composition by means of a spectrograph, which is connected to theoptical probe by a collection conduit; choosing the standard Raman spectrum of the reference material; determining the convolution functionof the convolved spectra from the convolved Raman spectrum and the standard Raman spectrum of the reference material; applying theconvolution function to adjust the convolved Raman spectrum of the composition to produce the standard Raman spectrum of the chemicalcomposition; and applying predetermined calibration means to the standard Raman spectrum of the chemical composition, by which thechemical constitution of the composition at the time of acquisition of the convolved Raman spectra can be ascertained.
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