Mass spectrometer and method of analyzing isomers

Details Mass spectrometer and method of analyzing isomers Mass spectrometer and method of analyzing isomers

2007-05-01

2007-05-01

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

C250S282000, C250S288000

Reexamination Certificate

active

11132174

ABSTRACT:
The invention intends to determine a presence ratio between mixed compounds which are difficult to separate from each other by a separation unit and cannot be discriminated by MS. In a mass spectrometer with an MSnanalysis function for ionizing a sample eluted from a separation unit for separating the sample into individual components, fragmenting an ion of a desired mass number, and performing a mass analysis of fragment ions, the mass spectrometer includes a database storing correlation information between an isomer presence ratio and a particular ion intensity ratio in a mass spectrum per isomer. An isomer ratio can be clarified even for a mixed sample of isomers, such as enantiomers, which are difficult to separate from each other by the separation unit and cannot be discriminated by MS.

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