Mass Spectrometry Data Processing Apparatus, Mass Spectrometry System, and Method for Processing Mass Spectrometry Data

A mass spectrometry system, comprising:

• a mass spectrometer that performs mass spectrometry of a sample and generates mass spectrum data;
• and
• a mass spectrometry data processing apparatus that acquires the mass spectrum data from the mass spectrometer, wherein
• the mass spectrometry data processing apparatus includes a data processing part that extracts a plurality of peaks from the mass spectrum data and generates a peak list including peak data in which a mass and an intensity of each of the peaks are registered,
• the data processing part has a calculation part that calculates differences in mass among all pieces of the peak data from the peak list, and
• the calculation part calculates an intensity ratio that is a ratio of intensity between two pieces of the peak data used in calculating the difference for each of the calculated differences, generates difference-intensity ratio data including the difference and the intensity ratio, retrieves difference-intensity ratio data having the difference included in a section of a preset difference from the difference-intensity ratio data, calculates a sum of the intensity ratio of the retrieved difference-intensity ratio data, and calculates difference-intensity ratio distribution data including a section of the difference and a sum of the intensity ratio.

A method for processing mass spectrometry data, comprising the steps of:

• extracting a plurality of peaks from mass spectrum data and generating a peak list including peak data in which a mass and an intensity of each of the peaks are registered;
• calculating differences in mass among all pieces of the peak data from the peak list, calculating an intensity ratio that is a ratio of intensity between two pieces of the peak data used in calculating the difference for each of the calculated differences, and generating difference-intensity ratio data including the difference and the intensity ratio;
• and
• retrieving difference-intensity ratio data having the difference included in a section of a preset difference from the difference-intensity ratio data, calculating a sum of the intensity ratio of the retrieved difference-intensity ratio data, and calculating difference-intensity ratio distribution data including a section of the difference and a sum of the intensity ratio.