Patent ID: 8044347

Claim:
A method for processing data collected by a mass spectrometer including an ion source, a mass separator for performing a mass separation of ions produced by the ion source and a detector for detecting the ions resulting from the mass separation, the data being used to create a mass spectrum over a predetermined mass range, comprising: a) a noise information acquiring step for extracting data obtained within a range where none of the ions originating from a sample arrive at the detector from among measurement data collected for each mass scan operation, and for calculating a threshold value by a statistical process based on the extracted data; b) a profile data acquiring step for extracting a profile data, which is a data that corresponds to a measurement mass range among the measurement data; c) a noise removing step for removing a noise component from the profile data with reference to the threshold value; and d) a spectrum creating step for creating a mass spectrum, using the profile data from which the noise component has been removed.