Patent ID: 11879879
Assignee: SHIMADZU CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A spectrum data processing device that processes spectra data obtained by performing predetermined analysis on a target sample including a target compound which is a target of identification based on the spectra data obtained for the target sample, the spectrum data processing device comprising:
a memory in which a spectrum library having a plurality of standard spectra is stored; and
a processor configured to:
generate an original spectrum of the target compound;
acquire a plurality of background spectra each corresponding to a spectrum derived from a compound other than the target compound in accordance with a plurality of background acquisition conditions determined in advance;
calculate a plurality of difference spectra, each difference spectrum of the plurality of difference spectra being obtained by subtracting each background spectrum of the plurality of background spectra from the original spectrum;
calculate similarities between each of the plurality of difference spectra and at least one of the plurality of standard spectra stored in the spectrum library;
set, from the at least one of the plurality of standard spectra used to calculate the similarities, the standard spectra with a highest value in the similarities, as a candidate compound;
determine whether the highest value in the similarities exceeds a predetermined threshold; and
identify the target compound as the candidate compound if the highest value in the similarities exceeds the predetermined threshold.