| abstract |
An object of the present invention is to provide a mass spectrum analysis method and apparatus that can easily analyze a mass spectrum in which a peak of an impurity-added ion appears and can identify an ion species based on a commercially available GC / MS database. . Kind Code: A1 An information of an ionization method, a detection polarity of a mass spectrometer, and a mobile phase solvent, which are inputted, is registered in a database unit. By comparing peaks of additional ions contained in the detection data with the information of the additional ions expected to be detected under the conditions, the molecular weight of the sample molecule is determined based on their mass-to-charge ratio. did. Further, the library search is performed after deleting the detected peak of the additional ion from the detection data and adding the peak of a predetermined height to the peak position of the molecular ion corresponding to the additional ion. I did it. [Selection diagram] FIG. |