| 摘要 |
PROBLEM TO BE SOLVED: To provide a mass analysis system, capable of analyzing trace amounts of components contained in a sample, without having to remeasure and extend the analysis time for ions per analysis case. SOLUTION: In the tandem-type mass analyzing system, a database is searched, when the candidate of parent ions for MS<SP>2</SP>mass analysis is selected from among the peak ions of an MS<SP>1</SP>mass spectrum and the components that are not stored in the database or the component that are stored in the database but not identified in the arrangement of molecules with a predetermined number N or larger is selected as parent ions, and MS<SP>2</SP>mass analysis is performed, until a predetermined number N or larger of the rows of molecules are identified, with respect to the selected parent ions. COPYRIGHT: (C)2008,JPO&INPIT
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