Method and apparatus for mass spectrometry of a sample with a high utilization

摘要

Method for measuring the mass spectra with a high degree using a sample, comprising the step of filtering the mass precursor ions of the first group from the mass spectrum with a mass to charge ratio within a predetermined range of the first. Precursor ions of one type, are fragmented then selectively at least the precursor ion in the first group. Fragment mass spectrum of the first precursor ions are fragmented precursor ions in the first group is measured, the precursor ions of other mass-to-charge ratio within a predetermined range of the first is held in the other hand. Precursor ion of the second group with a mass to charge ratio within a predetermined range of the second mass filter is from the mass spectrum. In the precursor ions of a second group of precursor ions of one type is fragmented at least selectively. Fragment mass spectrum of the second precursor ions are fragmented precursor ions in the second group is then measured.