Spectrum-mass spectrum combined device and detection method

A detection method, mass spectrometry technology, applied in the field of spectrometer-mass spectrometry device, can solve problems such as difficulty in obtaining absolute concentration of component gases, increased cost of use and maintenance, and reduced analysis speed

Active Publication Date: 2021-05-18
WUHAN MIZI ENERGY SCI & TECH CO LTD +1
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Problems solved by technology

However, this method directly obtains the relative proportion of each component, and it is difficult to obtain the absolute concentration of the component gas
One of the methods to solve these problems is "chromatography-mass spectrometry (GC-MS)", but due to the use of chromatography, the analysis speed is greatly reduced, and the cost of use and maintenance is significantly increased.
In addition, mass spectrometry for gas components with the same or similar mass-to-charge ratios (such as CO and N 2 ), there is no way to distinguish

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  • Spectrum-mass spectrum combined device and detection method

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Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or pos...

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Abstract

The invention discloses a spectrum-mass spectrometry device and a detection method. The spectrum-mass spectrometry device comprises a spectrum analysis module and a mass spectrometry module which are communicated with each other, and the working negative pressure of the mass spectrometry module provides a vacuum environment for spectrum analysis of the spectrum analysis module; the multi-component mixed gas is subjected to spectral analysis through the spectral analysis module to obtain the absolute concentration of a part of components in a multi-component mixed gas sample, and then the multi-component mixed gas sample output from the spectral analysis module is subjected to mass spectrometry through the mass spectrometry module; and the relative concentration of the to-be-detected component in the mixed gas sample is obtained. The spectrum-mass spectrum combined device provided by the invention can realize rapid and convenient real-time online analysis of the concentration of all components of the mixed gas with relatively high precision (PPM-PPB level trace analysis) and high resolution (not interfered by background gas and impurities), and is convenient to use, free of consumables, free of maintenance and stable in long-term operation.

Description

technical field [0001] The invention relates to the field of gas analysis, in particular to a spectrum-mass spectrometry device and a detection method. Background technique [0002] In the online or offline analysis of gases in petrochemical, natural gas, metallurgy and other industries, commonly used mixed gas analysis methods include chromatography, spectroscopy and mass spectrometry. [0003] Chromatography, for gas analysis is "Gas Chromatography (GC)". The analysis process is to use a carrier gas to send a small amount of sample gas into a porous body called a chromatographic column, and use the difference in the diffusion speed of different component gases in the chromatographic column to achieve the separation of mixed gases and finally achieve gas analysis. the goal of. This is the mainstream method of gas analysis at present, with relatively mature development and relatively high precision. However, the analysis period of this method is relatively long, and the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/39G01N27/62
CPCG01N21/39G01N27/62G01N30/72G01N21/27
Inventor 胡雪蛟刘胜向柳
Owner WUHAN MIZI ENERGY SCI & TECH CO LTD
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