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Proton transfer reaction device with multipole rod

A proton transfer reaction and multipole technology, applied in the field of ion transmission, can solve the problem of difficulty in decomposing the spectrum of mixed unknowns, and achieve the effects of enhancing thermal motion and ion activity, improving sensitivity, and avoiding contamination.

Active Publication Date: 2013-09-11
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many fragment peaks generated by the EI source, and it is very difficult to solve the spectrum of mixed unknowns

Method used

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  • Proton transfer reaction device with multipole rod
  • Proton transfer reaction device with multipole rod
  • Proton transfer reaction device with multipole rod

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Experimental program
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Embodiment Construction

[0036] refer to figure 1 , a multi-pole proton transfer reaction device, including a drift tube 3 for proton donor and analyte to carry out proton transfer reaction, the front end of the drift tube 3 is provided with a proton donor inlet 1 and a sample molecule and carrier gas The introduced carrier gas is introduced into the channel 2, and the rear end of the drift tube 3 is provided with a carrier gas extraction channel 4 and an analyte ion outlet 5. The drift tube 3 is a vacuum chamber sealed for proton transfer reaction and ion regulation. A segmented quadrupole is arranged inside the drift tube 3, and the segmented quadrupole is connected with a controllable boosted radio frequency power supply.

[0037] The segmented quadrupole is used as an electric field carrier to control the proton transfer reaction cross-section, and a boosted radio frequency power supply is added on it. The boosted radio frequency power supply is based on a high-voltage radio frequency, and the hig...

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Abstract

The invention discloses a proton transfer reaction device with a multipole rod. The device comprises a drift tube for the proton transfer reaction of a proton supplier and analyte. The front end of the drift tube is provided with a proton supplier inlet and a carrier gas introduction channel for introducing sample molecules and a carrier gas, and the rear end of the drift tube is provided with a carrier gas outlet channel and an analyte ion outlet. The sectionalized multipole rod is arranged in the drift tube and connected with a controllable boosted radio frequency power supply. By the device, the cross section of an ion beam is controlled by controlling the amplitude of a boosted radio frequency voltage loaded on the sectionalized multipole rod, so the cross section for the proton transfer reaction at the front end is enlarged and then maximal proton transfer reaction is realized; the cross section of the ion beam at the rear end is reduced, so an ion transport rate is improved, pollution of neutral molecules to a spectrum analyzer is avoided and the flexibility of the analyzer is improved.

Description

technical field [0001] The invention relates to the field of ion transmission, in particular to a multi-pole proton transfer reaction device. Background technique [0002] Mass spectrometry is one of the most accurate methods for molecular structure analysis and can be used for qualitative analysis of unknowns and quantitative detection of known components in mixtures. The ion source is a critical part of a mass spectrometer. The most commonly used ion source is the EI (electron ionization) source, which uses high-energy electron beams to bombard the sample, thereby ionizing the sample to generate electrons and molecular ions. The principle is as follows: [0003] [0004] m + It can continue to break and carry out molecular rearrangement to produce a variety of fragment ions. The EI source has high ionization efficiency, good repeatability, and has a complete spectral library. It is currently the most widely used ion source. However, there are many fragment peaks ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/42
Inventor 程平陈应董俊国黄正旭傅忠周振
Owner SHANGHAI UNIV
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