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A micro-array ion transfer tube

An ion transfer tube and micro-array technology, applied in the field of micro-array ion transfer tubes, achieves the effects of strong practicability, simplified gas supply system, and reduced volume

Active Publication Date: 2020-11-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a micro-array ion transfer tube, which focuses on solving technical problems such as the integration and miniaturization of multiple ion transfer tube arrays

Method used

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  • A micro-array ion transfer tube
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  • A micro-array ion transfer tube

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Experimental program
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Embodiment Construction

[0033] According to the overall structure diagram figure 2 As shown, the micro-array ion transfer tube consists of an ionization source module, an electrode plate, a reaction area, an ion gate, a transfer area and a signal receiving module, etc., and they are all arrayed.

[0034] See figure 1 In the cross-sectional view, the ionization source module includes the ionization source 2 and the ionization source cover 1, wherein the ionization source 1 can be VUV lamp, nickel source, corona discharge, glow discharge, electrospray, laser and other ionization methods, which are used in this embodiment Is the VUV ionization source. In order to facilitate ion extraction, an ion repeller 3 is installed at the front end of the ionization source.

[0035] The signal receiving module includes a Faraday disk 11, a Faraday disk frame 9 and a shielding cylinder 10, and each transfer tube has a signal receiving module. The Faraday disk holder 9 is an insulator, which plays the role of fix...

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Abstract

The invention designs the micro-array ion transfer tube and considers miniaturization. Array ion transfer tubes have independent ionization source, reaction area, ion gate, migration area and signal detection unit, so that the ions of the two modes or ions of different ionization sources do not interfere with each other and work independently to ensure the stability of the detection signal. The electrodes in the reaction zone and the migration zone are composed of upper and lower electrode plates and electrode rods. The migration tube is more compact, and the upper electrode plate is distributed with voltage dividing resistors that form the migration electric field, which reduces the volume of the migration tube. The two ion transfer tubes share the air intake and drift gas, which simplifies the gas supply system of the ion mobility spectrometer; share a transfer tube body to ensure the connection and sealing of the transfer tube. Other areas on the electrode plate can have other circuit modules to realize integration. The structure design of the invention is simple and compact, and has strong practicability.

Description

technical field [0001] The invention relates to the technical field of ion transfer tubes, in particular to a micro-array ion transfer tube which is the core component of ion mobility spectrometry. The simultaneous detection of electric field or different ionization sources, positive and negative dual modes or multiple ionization sources greatly improves the detection range of the ion transfer tube, and is also conducive to integration and miniaturization. Background technique [0002] Ion mobility spectrometry is an instrument that detects ions by using different mobility of ions. The ionization source ionizes the sample into positive and negative ions, and the positive and negative ions fly into the migration area under the action of the ion gate. After a certain distance, they reach the detector and produce ion signal. The time for different positive and negative ions to pass through the migration area is different, corresponding to the signals of different peak time, to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/26G01N27/62G01N27/622
CPCH01J49/26G01N27/622
Inventor 仓怀文李海洋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI