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Data-processing apparatus for chromatography mass spectrometry

A data processing device and mass spectrometry analysis technology, which is applied in the direction of analyzing materials, measuring devices, and material analysis by electromagnetic means to achieve the effect of increasing the processing capacity and reducing the burden.

Active Publication Date: 2016-04-20
SHIMADZU SEISAKUSHO CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are various configurations of mass spectrometers for MS / MS analysis, but triple quadrupole mass spectrometers have a relatively simple device structure and are easy to operate and handle

Method used

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  • Data-processing apparatus for chromatography mass spectrometry
  • Data-processing apparatus for chromatography mass spectrometry
  • Data-processing apparatus for chromatography mass spectrometry

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Embodiment Construction

[0042] Hereinafter, an embodiment of a GC-MS / MS system equipped with a data processing device for chromatography-mass spectrometry according to the present invention will be described in detail with reference to the drawings.

[0043] Such as figure 1 As shown, the GC-MS / MS system includes GC part 1 and MS / MS part 2. The GC unit 1 includes: a sample gasification chamber 10 for vaporizing a trace amount of a liquid sample; a column 12 for separating sample components in the time direction; and a column thermostat 11 for adjusting the temperature of the column 12 . On the other hand, the MS / MS unit 2 includes an ion source 21 for ionizing a sample to be measured by electron ionization (EI) in an analysis chamber 20 evacuated by a vacuum pump not shown in the figure; The front-stage quadrupole mass filter 22 and the rear-stage quadrupole mass filter 25 are composed of four rod electrodes respectively; the collision cell 23 is equipped with a multi-pole ion guide 24 inside; and ...

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Abstract

The present invention includes: extracting a mass spectrum about a peak A detected on a chromatogram which is made on the basis of data obtained by a product ion scan regarding one characteristic ion species resulting from an objective compound, and subjecting the mass spectrum to database search to extract candidate compounds as results of primary search; extracting a mass spectrum about a peak B detected on a chromatogram which is made on the basis of data obtained by a product ion scan regarding another characteristic ion species resulting from the objective compound, subjecting the mass spectrum to database search, in which the search scope is limited to the candidate compounds extracted as the results of the search based on the peak A, to narrow down the candidate compounds; and representing the candidate compounds thus narrowed down and thereby attaining a labor saving in the compound identification by an analyst.

Description

technical field [0001] The invention relates to a method for processing data collected by a chromatographic mass spectrometry device formed by combining a gas chromatograph, a liquid chromatograph, and a triple quadrupole mass spectrometer (also called a tandem quadrupole mass spectrometer). The data processing device for chromatography-mass spectrometry, and more specifically, relates to a data processing device for identifying or estimating the structure of a compound contained in a sample. Background technique [0002] A method called MS / MS analysis (tandem MS analysis) is widely used as one method of mass spectrometry for identification, structure analysis, or quantification of compounds with relatively large molecular weights. As a mass spectrometer for performing MS / MS analysis, there are devices with various configurations, but a triple quadrupole mass spectrometer has a relatively simple device structure and is easy to operate and handle. [0003] In an ordinary tri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N30/86
CPCH01J49/0036G01N30/72G01N30/8679H01J49/004
Inventor 坂本雄纪
Owner SHIMADZU SEISAKUSHO CO LTD
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