| 摘要 |
A data processing device (1) is provided with: a data base storage region (32c) for storing MS n mass spectra of a great number of known compounds in advance; an acquisition unit for acquiring the MS n mass spectrum of an unknown compound (31a) ; and a score calculation unit (31d) for finding respective scores indicating similarities between the MS n mass spectrum of the unknown compound and MS n mass spectra of the great number of known compounds. The data processing device (1) is characterized by being further provided with: an intensity score calculation unit (31b) for classifying the peaks in the MS n mass spectrum of the unknown compound and the peaks in the MS n mass spectra of the known compounds into intensity scores of several ranks depending on the dimensions of the ion intensities, respectively; and a position score calculation unit (31c) for finding the respective position scores indicating error in the mass-to-charge ratio for each peak, wherein the score calculation unit (31d) adds up the intensity score of each peak in the MS n mass spectrum of a known compound, the intensity score of the corresponding peak in the MS n mass spectrum of the unknown compound and the position score, and calculates as a score the sum total of the values that have been added up for all peaks. |
