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Array ion migration tube

A technology of ion transfer tubes and transfer tubes, which is applied to measuring devices, instruments, and material analysis through electromagnetic means, and can solve problems such as structurally integrated designs that have not yet appeared, material mobility changes, and difficulty, and achieve Compact structure, improved detection capability, and improved efficiency

Active Publication Date: 2010-06-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there have been reports in the world that multiple sets of transfer tubes are used in parallel, but the structurally integrated design has not yet appeared.
[0005] In addition, due to the difficulty in controlling the working state parameters of the transfer tube, such as humidity, gas pressure, temperature, etc., especially the control of humidity is quite difficult, which makes the material mobility during the measurement constantly changing.

Method used

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Examples

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Effect test

Embodiment 1

[0030] The schematic diagram of the two-dimensional array of the array type ion transfer tube of the present invention is as follows figure 1 shown.

[0031] An arrayed ion transfer tube, including an ion source area 2, a reaction area 3, an ion gate 4, a drift area 5, a grid 6, and a Faraday disk 7 from left to right along an axis;

[0032] The drift region 5 is a cylindrical space structure composed of insulating rings and electrode rings 8 coaxially alternately stacked; along the axial direction of the cylindrical space structure, an ion gate 4 and two parallel electrodes are sequentially arranged at one end of the drift region 5 . An ionization source area 2 is provided with an insulating ring and an electrode ring between the ion gate 4 and the ionization source area 2, and the cylindrical space structure inside the insulating ring and the electrode ring is used as the reaction area 3; in the reaction area near the ion gate 4 A gas outlet is provided on the insulating ri...

Embodiment 2

[0043] An arrayed ion transfer tube, which includes an ionization source area, a reaction area, an ion gate, a drift area, a grid, and a Faraday disk from left to right along an axis. The difference from Example 1 is that the ionization source area There are three Faraday disks, and the three ionization source regions or Faraday disks are parallel to each other, and the ionization source regions and Faraday disks correspond to each other at the two ends of the axis of the transfer tube, forming three or more than two transfer tubes detection channel.

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Abstract

The invention discloses an array ion migration tube, which is designed and manufactured by array integration. The migration tube can simultaneously provide a plurality of detection channels with same electric fields and ion gate pulses, achieve the integrated application of a variety of detection means, and improve the detection capability of a migration spectrometer. The migration tube is characterized in that the integrated array structure consists of an array sampling channel, ionization sources, a reaction zone, an ion gate, a drift area, a grid, a Faraday plate, and the like. The new ion migration tube can use different ionization sources, drift gas, doping gas, and the like, and therefore realizes the high-selective determination to a material to be detected and the uniformity of influencing factors of the migration rate in the influencing factors, and greatly reduces the false alarm rate of the migration spectrometer.

Description

technical field [0001] The present invention relates to an ion transfer tube, in particular to a novel array ion transfer tube. All detection channels of the new array ion transfer tube adopt structurally integrated design, and have an array integrated carrier gas inlet, The ionization source, reaction area, ion gate, drift area, grid structure, Faraday disk structure, and amplified detection components realize simultaneous detection of multiple detection channels with the same electric field and ion gate pulse, greatly improving the accuracy of instrument detection sex and reliability. Background technique [0002] Ion mobility spectrometry is a material analysis and detection technology developed since the early 1970s. The basic principle it adopts is that ions generated under atmospheric pressure conditions, under a specific electric field characteristic, when drifting from the same starting point and passing the same distance, different ions will take different times du...

Claims

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Application Information

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IPC IPC(8): H01J49/26G01N27/64
Inventor 李海洋杜永斋董璨
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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