Data processing device for chromatograph mass spectrum analysis

A data processing device and mass spectrometry analysis technology, which is applied in the direction of measuring devices, analyzing materials, and material analysis through electromagnetic means, can solve problems such as mass number deviation, mass spectrum chromatogram accuracy deterioration, and mass number deviation, so as to improve accuracy , Improve the peak detection accuracy, improve the stability of the effect

Active Publication Date: 2009-03-11
SHIMADZU SEISAKUSHO CO LTD
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Problems solved by technology

Since the mass spectrum curves obtained at different times are independently filtered in the direction of the mass spectrum axis, even if there are peaks for ions with the same mass number, the mass on the mass spectrum in the case of overlapping noises as described above and the case of non-overlapping The number may deviate, and the mass number detected at each moment has a deviation
For this reason, while the mass spectrum resolution of the mass spectrometer decreases, the accuracy of the mass spectrum chromatogram also deteriorates.

Method used

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  • Data processing device for chromatograph mass spectrum analysis
  • Data processing device for chromatograph mass spectrum analysis
  • Data processing device for chromatograph mass spectrum analysis

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Embodiment Construction

[0027] Hereinafter, an embodiment example of the data processing apparatus for chromatography-mass spectrometry according to the present invention will be described with reference to the drawings. figure 1 It is an overall configuration diagram of a gas chromatography-mass spectrometry apparatus (GC / MS) equipped with the data processing apparatus of this embodiment.

[0028] figure 1 In the gas chromatography (GC) section 10, a sample vaporization chamber 11 is provided at the entrance of a column 15 heated to an appropriate temperature by a column heating furnace 14, and a carrier gas flow is passed through the sample vaporization chamber 11. The channel 13 supplies a carrier gas (here, helium He) at a predetermined flow rate and flows into the column 15 . In this state, if a small amount of liquid sample is injected into the sample vaporization chamber 11 from the micro-syringe 12 , the liquid sample is immediately vaporized and sent into the column 15 along with the flow...

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Abstract

When mass spectrums are formed sequentially by scanning a predetermined mass range repeatedly and a mass chromatogram or the like is created. A predetermined number of arrays of many elements of data arranged on the mass axis and constituting a mass profile within a predetermined mass range are collected on the time axis (S1, S2), target data is corrected for each element of data arrange in the direction of the mass axis by using elements of data adjoining front and rear in the direction of mass axis, and elements of data adjoining front and rear in the direction of time axis, thus performing two-dimensional filtering (S3). Peak number of mass is determined by performing peak detection (S4) on a mass profile formed of the filtered data and then a mass spectrum is formed (S5). Variations in the number of masses of the mass spectrum are thereby suppressed, thus enhancing mass resolution and precision of mass chromatogram.

Description

technical field [0001] The present invention relates to gas chromatographic mass spectrometry (GC / MS) and liquid chromatographic mass spectrometry (LC / MS), etc., for processing the data obtained by the chromatographic mass spectrometry combined with chromatographic analysis and mass spectrometry The device, in more detail, relates to a data processing device for chromatography-mass spectrometry that performs scanning measurement that repeatedly scans a mass spectrum range specified in the mass spectrometry device. Background technique [0002] In a gas chromatography-mass spectrometry device (GC / MS), a liquid chromatography-mass spectrometry device (LC / MS), or a supercritical chromatography-mass spectrometry device (SFC / MS), the sample components are separated along the time axis through chromatographic analysis, and Each separated component is ionized by the mass spectrometer and separated and detected according to the mass spectrometer. Based on the data obtained by perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N30/72
CPCH01J49/0036G01N30/72G01N30/8603G01N30/8617
Inventor 川名修一种田克行下村学
Owner SHIMADZU SEISAKUSHO CO LTD
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