| 摘要 |
PROBLEM TO BE SOLVED: To provide a mass analyzer enhanced in selectivity and detection sensitivity in order to prevent the erroneous detection due to impurities. SOLUTION: Drift voltage corresponding to an ion component being each of a plurality of detection target substances is applied to judge whether inherent m/z of ion component being the detection target substance is detected. Further, in the case where m/z inherent to the ion component being the detection target substance is detected, the drift voltage is changed to drift voltage for dissociating the ion component being the detection target substance to judge whether a fragment ion of inherent m/z is detected. In the case where there is the ion peak of m/z of the fragment ion, the detection target substance is judged to be present to give an alarm. COPYRIGHT: (C)2008,JPO&INPIT
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