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A Compound Ion Source Bipolar Linear Ion Trap Mass Analyzer

A linear ion trap and analyzer technology, applied in the field of chemical measurement, can solve the problems of no soft ionization, hard ionization and bipolar detection, inability to respond to detailed information in real time, and difficulty in electrode processing, etc. The effect of low processing requirements and improved detection sensitivity

Active Publication Date: 2020-12-25
杭州蔚领知谱检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the trap electrode of traditional linear ion trap mass spectrometer is difficult to process and the cost is high
And it does not have the function of soft ionization, hard ionization and bipolar detection of substances at the same time, and cannot reflect the detailed information of the detected substances in real time

Method used

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  • A Compound Ion Source Bipolar Linear Ion Trap Mass Analyzer
  • A Compound Ion Source Bipolar Linear Ion Trap Mass Analyzer
  • A Compound Ion Source Bipolar Linear Ion Trap Mass Analyzer

Examples

Experimental program
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Effect test

Embodiment 1

[0039] see figure 1 , a compound ion source bipolar linear ion trap analyzer, consists of a UV lamp ion source 1, an ion repelling electrode 2, a focusing electrode 3, a guiding electrode 4, a front cover electrode 5, two Trap fixing seats 6, 6', two electron multipliers 7, an ion trap analyzer 8, a rear end cover electrode 9, an EI filament ion source 10 and two electron multiplier shielding seats 11. The center of the front end cover electrode 5 and the rear end cover electrode 9 are respectively provided with an ion entrance and exit hole, which are respectively an ion entrance hole 17 and a hard ionization entrance hole 29. 2. The focusing electrode 3 and the guiding electrode 4 constitute the ion transmission part, and the first trap fixing seat 6 is located between the front cover electrode 5 and the ion trap analyzer 8, and is used for fixing the front cover electrode 5 and the ion trap analyzer 8 , the second trap fixing seat 6' is located between the ion trap analyze...

Embodiment 2

[0049] Embodiment 2 Working process of the present invention

[0050] Soft ionization mode: After the detection sample is preliminarily separated by the chromatographic or liquid phase 32, it enters the sample introduction port 14 through the soft ionization sample channel 33, and after the photons are generated by the ultraviolet lamp ion source 1, they enter the ionization area 13 from the photon incident hole 12 and dissipate this area. Soft ionization of the inner sample. The instrument work is divided into 4 stages: ion introduction, ion cooling, mass analysis and ion emptying. In the ion introduction stage, the ion beam softly ionized by the ultraviolet lamp ion source 1 is focused and transported by the ion repeller electrode 2 , focusing electrode 3 , and guide electrode 4 , and enters the ion trap analyzer through the ion entrance hole 17 . At this time, the radio frequency voltage signal loaded on the ion trap analyzer remains unchanged, and the ions entering the io...

Embodiment 3

[0054] refer to Figure 13 , Compound ion source bipolar linear ion trap analyzer works with chromatography or liquid phase: 32-chromatography or liquid phase, 33-soft ionization sample channel, 34-hard ionization sample channel. Chromatography or liquid phase has extremely strong separation ability, and bipolar linear ion trap has unique identification ability for unknown substances, and its sensitivity is extremely high. Therefore, the compound ion source bipolar linear ion trap analyzer and chromatography or liquid Hyphenation is one of the powerful tools for separating and detecting complex compounds. When the multi-component mixed sample enters the chromatographic or liquid phase 32, use the principle that the adsorbents in the chromatographic or liquid phase 32 have different adsorption forces for each component to initially separate the components in the test sample, and then sequentially The soft ionization sample channel 33 enters the ultraviolet lamp ion source 1 or...

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Abstract

The invention provides a composite ion source bipolar linear ion trap mass analyzer which is composed of an ultraviolet lamp ion source, an ion repulsion electrode, a focusing electrode, a guide electrode, a front end cap electrode, a trap fixing seat, an electron multiplier, an ion trap analyzer, a rear end cap electrode, an EI filament ion source and an electron multiplier shielding seat. The invention has a dual-mode switchable ionization mode and a bipolar operation mode, adopts a new cylindrical ion trap electrode structure, reduces the difficulty of ion trap processing, adopts a shieldeddouble-electron multiplier design, respectively receives and amplifies ions ejected from an ion trap analyzer, reduces detection noise, and improves detection sensitivity of an instrument. The invention is reasonable in design, adopts double ion gate design, is effectively compatible with soft ionization mode and hard ionization mode, is combined with chromatography or liquid phase, separates each component in the detected sample, is more favorable for qualitative and quantitative analysis of the sample by the instrument, and can be applied in soft ionization, hard ionization and bipolar detection of the substance.

Description

technical field [0001] The invention belongs to the technical field of chemical measurement, relates to a compound ion source bipolar linear ion trap mass analyzer, and is a novel device for analyzing and detecting novel bipolar substances combining soft ionization and hard ionization. Background technique [0002] As a representative of modern analytical instruments, mass spectrometers are widely used in many fields such as medicine, chemistry, and environmental biological analysis. They can effectively detect trace substances and are recognized as one of the effective means of qualitative and quantitative substances. [0003] Linear ion trap is a kind of mass spectrometer mass analyzer, which has high ion capture and storage efficiency. The ion trap mass analyzer has the advantages of small size, simple structure, and low requirement for vacuum, which is very suitable for the development of portable instruments for on-site emergency detection. However, the trap electrode ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/42H01J49/06
Inventor 赵高升施月娥赵彬锋
Owner 杭州蔚领知谱检测技术有限公司
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