Method for determining the concentration of a substance in a sample
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United States of America Patent
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Sep 3, 2015
app pub date -
Feb 19, 2015
filing date -
Feb 28, 2014
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Abstract
A method for determining the concentration of a substance in a sample (91) calculates a plurality of intermediate spectra (ZW1, ZW2) from a measured reference spectrum (RS) of the substance. For calculating the intermediate spectra (ZW1, ZW2), the following individual steps are applied to the reference spectrum (RS): shifting the position in accordance with a shift parameter; multiplication with an amplitude factor; and convolution with a system function in accordance with a line broadening parameter. The shift parameter, the amplitude factor and the line broadening parameter are changed within the scope of an optimization algorithm that iteratively optimizes the correspondence between the intermediate spectra (ZW1, ZW2) and the measured spectrum (GS). A simplified method for determining the concentration of a substance in a sample is thereby provided with which the involvement of an expert in spectral analysis is not necessarily required.
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