Tandem mass spectrometer and mass spectrometric method

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United States of America Patent

PATENT NO 8866074
APP PUB NO 20140239170A1
SERIAL NO

14188247

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Abstract

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An ion trap is provided between a collision cell and a time-of-flight mass separator. During a time period in which precursor ions derived from the same compound are selected with a quadrupole mass filter, a collision energy is changed from one to another. Various product ions that are produced by dissociation respectively under collision energies of the plurality of stages and precursor ions that are not dissociated are temporarily trapped in the ion trap, and are ejected in a packet form in the state where these ions are mixed, and are introduced into the time-of-flight mass separator 6 to be subjected to a mass spectrometry. Thereby, in a data processing unit, one MS/MS spectrum in which product ions produced in various dissociation modes under various CID conditions appear is created.

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Patent Owner(s)

  • SHIMADZU CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okumura, Daisuke Mishima-gun, JP 47 412

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