Patent ID: 8735809

Claim:
A chromatograph mass spectrometer combining a chromatograph for separating compounds in a sample in the time direction and a mass spectrometer for separating and detecting ions derived from the compounds separated by the chromatograph in accordance with the mass-to-charge ratio, wherein said mass spectrometer executes selected ion monitoring (SIM), selection reaction monitoring (SRM), or multiple reaction monitoring (MRM) with respect to one or a plurality of specific mass-to-charge ratios in the vicinity of a chromatogram peak corresponding to a target compound, said chromatogram mass spectrometer comprising: a) a compound table holding means which stores a compound table containing information indicating, for each compound to be measured, at least the standard predicted retention time, the mass-to-charge ratio characterizing the compound, and the upper limit of the measurement point time interval; and b) an analysis condition table creation means which, in order to perform SIM measurements, SRM measurements, or MRM measurements on compounds listed in said compound table, creates an analysis condition table containing information indicating at least the measurement time range and the mass-to-charge ratios to be measured for each compound to be measured based on the information contained in said compound table; wherein said analysis condition table creation means includes a correction means which, after said analysis condition table creation means temporarily creates an analysis condition table based on the information contained in said compound table, corrects the analysis condition table by adjusting the start time and the end time of the measurement time range for each compound so that the measurement time interval for each compound falls within the upper limit of the measurement time interval set in said compound table.