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Mass spectrum device detection method for detecting multi-component sample

A detection method and multi-component 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: 2022-03-11
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, the present application hopes to provide a method to solve the problem of photon competition effect and low sensitivity in the detection device

Method used

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  • Mass spectrum device detection method for detecting multi-component sample
  • Mass spectrum device detection method for detecting multi-component sample
  • Mass spectrum device detection method for detecting multi-component sample

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as figure 1 with figure 2 As shown, a mass spectrometry device detection method for detecting a multi-component sample includes the following steps: Step S1, introducing a sample through a sampling device 7, one end of the sampling device 7 is connected to the ionization chamber 6 and the sample is introduced into the ionization chamber 6;

[0046] In step S2, the low ionization energy sample molecules in the sample are ionized by the single photon ionization source 5 to obtain corresponding positive ions, and the single photon ionization source 5 is vertically installed on the ionization chamber 6;

[0047] Step S3, introducing the obtained positive ions into the mass analyzer 3 through the first electrostatic transmission focusing electrode 4 and installing the mass analyzer 3 at the end of the ionization chamber 6 facing away from the sampling device 7;

[0048] A first electrostatic transmission focusing electrode 4 is installed between the mass analyzer 3 an...

Embodiment 2

[0055] Embodiment 2 is a preferred example of Embodiment 1.

[0056] Such as figure 1 with figure 2 As shown, this embodiment includes: ionization gauge 1, the second electrostatic transmission focusing electrode 2, mass analyzer 3, the first electrostatic transmission focusing electrode 4, single photon ionization source 5, ionization chamber 6 and sampling device 7; One end of the device 7 is facing the ionization chamber 6, and the sample is introduced into the ionization chamber 6; the single-photon ionization source 5 is facing the ionization chamber 6, and the ionization sample is obtained to obtain corresponding positive ions; a first electrostatic transmission focus is arranged between the mass analyzer 3 and the ionization chamber 6 An electrode 4; a first electrostatic transmission focusing electrode 4 and a mass analyzer 3 are arranged between the second electrostatic transmission focusing electrode 2 and the ionization chamber 6; a first electrostatic transmissio...

Embodiment 3

[0060] Such as figure 2 As shown, first, the sample is introduced into the device through the sampling device 7 . Secondly, the ionization gauge 1 and the single-photon ionization source 5 ionize the measured sample into positive ions. Again, positive ions are introduced to the quadrupole mass analyzer through the second electrostatic transport focusing electrode 2 and the first electrostatic transport focusing electrode 4 . Next, the quadrupole mass analyzer obtains the mass spectrum peaks of the sample through mass analysis. Finally, according to the mass spectrum of the sample, the corresponding content of each substance was quantitatively analyzed.

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Abstract

The invention provides a mass spectrum device detection method for detecting a multi-component sample. The method comprises the following steps: S1, introducing a sample through a sample introduction device; s2, ionizing low-ionization-energy sample molecules in the sample through a single-photon ionization source so as to obtain corresponding positive ions; s3, introducing the obtained positive ions into a mass analyzer through a first electrostatic transmission focusing electrode; s4, high ionization energy sample molecules in the sample are ionized through an ionization gauge; s5, introducing the obtained positive ions into the mass analyzer through a second electrostatic transmission focusing electrode; and step S6, leading the obtained positive ions to a detector according to the mass-to-charge ratio by the mass analyzer, carrying out mass spectrometry to obtain a mass spectrum, and qualitatively and quantitatively analyzing each component and corresponding content in the sample according to the obtained mass spectrum. The ionization gauge and the single-photon ionization source are adopted as double ionization sources at the same time, the detection sensitivity is improved, and the range of analysis samples is widened.

Description

technical field [0001] The invention relates to the field of mass spectrometry analysis, in particular to a mass spectrometry device detection method for detecting multi-component samples. 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-line detection techniques. The specificity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/626
CPCG01N27/626
Inventor 孙露露罗勇路同山王玉涵金永星周旭唐朝阳周飞宇李飞穆辉薛兵
Owner SHANGHAI YUDA IND
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