| 摘要 |
PROBLEM TO BE SOLVED: To provide a mass spectrometer capable of high-sensitivity analysis of ion and high ion-selecting performance. SOLUTION: The mass spectrometer is provided with an ion generating part 1 generating ion, an ion trapping part 12 accumulating, isolating, dissociating, and exhausting ion, a detecting part 33 detecting exhausted ion, and a control part 34 controlling operation of the ion-trapping part. A total ion accumulation volume at each process or just before each process is calculated from results of mass spectrometry immediately before, and voltage conditions impressed on the ion-trapping part depending on the total ion accumulation volume is corrected at least at one of the processes. COPYRIGHT: (C)2007,JPO&INPIT
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