SPECTROMETRIC DETERMINATION METHOD, SPECTROMETRIC DETERMINATION DEVICE, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To determine the composition ratio of the components to be measured in the mixture of a liquid, a solid, and a gas without taking time to gradually change addition concentrations while performing measurement as in a conventional standard addition method.SOLUTION: A spectrometric determination device 100 comprises: a measurement unit 110 for spectroscopically analyzing a sample 10 to be analyzed that includes the components to be measured at an unknown composition ratio and a standard sample that includes the components to be measured at a known composition ratio, and obtaining an original spectrum and a reference spectrum; a first generation unit 130 for generating a virtual addition spectrum that includes multiple kinds of virtual addition rates in coefficients from these spectra; a second generation unit for generating multiple kinds of spectra to be analyzed from each virtual addition spectrum; an extraction unit 170 for extracting the signal intensity profile of the components to be measured that correspond to the virtual addition rate by a process that includes a multi-variable analysis; and a determination unit 190 for determining, from the virtual addition rate dependency of the signal intensity profile, the unknown composition ratio of the components to be measured that are included in the sample 10 to be analyzed.SELECTED DRAWING: Figure 1