| 摘要 |
PROBLEM TO BE SOLVED: To provide a mass spectroscope which can reduce an effect (cross-talk) of product ions generated from pre-measurement target ions in a collision chamber to thereby enhance the quantitative performance of mass spectrometry.SOLUTION: In an MS/MS type mass spectroscope which has a first mass spectrometry unit to which a DC voltage and a high frequency voltage are applied to discriminate a specific precursor ion, a collision chamber having an electrode for dissociating the precursor ion, a second mass spectrometry unit for discriminating only a desired ion from the plural product ions generated through the dissociation of the precursor ion, and a detector for detecting the product ion discriminated in the second mass spectrometry unit, a destabilizing voltage calculated from a destabilization area of the Mathieu chart is applied before a predetermined voltage is applied to a measurement target ion. |
