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Mass spectrum device for detecting multi-component sample, environment detection device and food detection device

A multi-component and sample technology, applied in the field of mass spectrometry, can solve the problems of photon competition effect, large loss of ion number, low sample sensitivity, etc., and achieve the effect of eliminating photon competition effect, improving detection sensitivity and improving sensitivity

Pending Publication Date: 2022-04-15
SHANGHAI YUDA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] 1. The sensitivity of measuring some samples is too low
In Chinese patent CN 201910759283.0, the ionization gauge is placed on the side of the sample inlet, too far away from the mass analyzer, and the sample ionized by the ionization gauge passes through the transmission collision between the ionization chamber and the transmission focusing electrode, the number of ions is lost, and the sensitivity is greatly reduced
[0009] 2. There is photon competition effect
[0011] Therefore, this application hopes to solve the problem of photon competition effect and low sensitivity in the detection device

Method used

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  • Mass spectrum device for detecting multi-component sample, environment detection device and food detection device
  • Mass spectrum device for detecting multi-component sample, environment detection device and food detection device
  • Mass spectrum device for detecting multi-component sample, environment detection device and food detection device

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Experimental program
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Effect test

Embodiment 1

[0044] like figure 1 and figure 2 As shown, a mass spectrometry device for detecting multi-component samples can be used for detection equipment such as environmental detection devices and food detection devices, including: an ionization gauge 1, a positive ion transmission device, a mass analyzer 3, a first electrostatic transmission focusing electrode 4, A single photon ionization source 5, an ionization chamber 6, and a sampling device 7; an ionization gauge 1 is installed at one end of the mass analyzer 3, an ionization chamber 6 is installed at the other end of the mass analyzer 3, and a first static electricity is installed between the ionization chamber 6 and the mass analyzer 3. The transmission focusing electrode 4 is installed on the end of the ionization chamber 6 facing away from the mass analyzer 3. A sample injection device 7 is installed. The single photon ionization source 5 is installed on the ionization chamber 6. A positive ion transmission device is allowe...

Embodiment 2

[0048] Embodiment 2 is a preferred example of Embodiment 1.

[0049] like figure 2 As shown, when the positive ion transmission device adopts the second electrostatic transmission focusing electrode 8, this embodiment includes: ionization gauge 1, second electrostatic transmission focusing electrode 8, mass analyzer 3, first electrostatic transmission focusing electrode 4, single photon Ionization source 5, ionization chamber 6 and sampling device 7; one end of the sampling device 7 faces the ionization chamber 6, and the sample is introduced into the ionization chamber 6; the single-photon ionization source 5 faces the ionization chamber 6, and the ionized sample obtains corresponding positive ions; mass analysis The first electrostatic transmission focusing electrode 4 is arranged between the device 3 and the ionization chamber 6; the first electrostatic transmission focusing electrode 4 and the mass analyzer 3 are arranged between the second electrostatic transmission focu...

Embodiment 3

[0053] like image 3 and Figure 4 As shown, first, the sample is introduced into the mass spectrometry device of this embodiment through the sampling device 7 . Secondly, the ionization gauge 1 ionizes the water and oxygen molecules in the sample to be tested into water and oxygen positive ions, and the single-photon ionization source 5 ionizes the organic matter in the sample to be tested into positive ions. Again, positive ions of water and oxygen are introduced into the quadrupole mass analyzer through the mesh 2 or the second electrostatic transmission focusing electrode 8 , and organic positive ions are introduced into the quadrupole mass analyzer through the first electrostatic transmission focusing electrode 4 . Next, the quadrupole mass analyzer obtains the mass spectrum peaks of water, oxygen and organic matter through mass analysis. Finally, according to the mass spectrograms of water, oxygen and organic substances, the corresponding content of each substance is q...

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Abstract

The invention provides a mass spectrum device for detecting a multi-component sample, an environment detection device and a food detection device. The mass spectrum device comprises an ionization gauge, a mass analyzer, an electrostatic transmission focusing electrode, a single-photon ionization source, an ionization chamber and a sampling device, one end of the mass analyzer is provided with the ionization gauge, and the other end of the mass analyzer is provided with the ionization chamber; the electrostatic transmission focusing electrode is arranged between the ionization chamber and the mass analyzer; the sample introduction device is mounted at one end, back to the mass analyzer, of the ionization chamber; the ionization chamber is provided with the single-photon ionization source. The device simultaneously adopts the ionization gauge and the single-photon ionization source as double ionization sources, so that the detection sensitivity is improved, the range of analysis samples is widened, the quadrupole mass analyzer is taken as a core, and two advantages of different ionization characteristics and high sensitivity of quadrupole mass spectrometry are combined.

Description

technical field [0001] The invention relates to the field of mass spectrometry analysis, in particular to a mass spectrometer device for detecting multi-component samples, an environment detection device and a food detection device. Background technique [0002] Online detection technology is one of the rapidly developing technologies in recent years. It can detect environmental quality in real time, detect pollution precursors early, and have a good early warning effect on sudden environmental pollution accidents, so it has gradually attracted people's attention. In addition, online detection technology is also widely used in environmental safety, food safety, chemical product process detection, etc. Therefore, research on fast on-line detection and analysis instruments with portability has gradually become one of the important development trends in analytical chemistry. [0003] Spectroscopic, chromatographic, sensor, and mass spectrometry methods can all be used in on-li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/04H01J49/28
Inventor 孙露露李飞金永星罗勇周旭唐朝阳周飞宇王玉涵穆辉薛兵
Owner SHANGHAI YUDA IND
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