Mass spectrometric analysis method and system using the method

Details Mass spectrometric analysis method and system using the method Mass spectrometric analysis method and system using the method

2006-05-25

2008-10-14

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

C250S282000, C250S286000, C250S288000, C250S398000

Reexamination Certificate

active

07435949

ABSTRACT:
A tandem analysis system is provided for ionizing a substance, performing mass spectrometric analysis of various ion types generated, selecting and dissociating an ion type, the ion type having a specific mass-to-charge ratio, and thereby, repeating mass spectrometric analysis measurement on the ion of the ion type over n-th stages. A processing judges control content for the analysis next to MSn(the n-th stage mass spectrometric analysis) within a predetermined time, based on ion intensity being represented by an ion peak with respect to the mass-to-charge ratio of each ion in the MSnresult. An ion detection unit judges isotope-peak from the measured ionized data. Assuming that the MS1count number of a parent-ion peptide measured during a certain constant time-interval is I, a data processing unit makes the MS2integration number-of-times or analysis time of the peptide proportional to 1/I.

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