Combined type high-field asymmetric waveform ion mobility tube
A waveform ion migration and high-field asymmetry technology, which is applied to measuring devices, instruments, and material analysis through electromagnetic means, to achieve the effects of simple structure, reduced temperature, and improved detection capabilities
Active Publication Date: 2012-01-11
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
At present, the high-field asymmetric waveform ion mobility spectrometry reported in the literature and patents only realizes the detection of ions of a single polarity (electrophilic or protonophilic)
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[0025] The schematic diagram of the combined high-field asymmetric waveform ion mobility spectrum of the present invention is as follows figure 1 , 2 shown.
[0026] A new combined high-field asymmetric waveform ion mobility spectrometer, its dual-channel detection structure adopts an integrated design, specifically, the combined high-field asymmetric waveform ion mobility spectrometer is composed of the following components: gas inlet 3, Ion source 1, high-voltage asymmetric field electrode, Faraday disk 6, gas outlet, etc., realize simultaneous detection of dual detection channels;
[0027] One end of the ion source 1 is provided with a gas inlet 3, and the other end is provided with two ground electrode sleeves 2, and a high-voltage asymmetric field electrode is provided at the axial position in the middle of the ground electrode sleeve 2, and a ground electrode sleeve 2 The internal high-voltage asymmetric field electrode is a positive high-voltage asymmetric field elec...
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The invention discloses a combined type high-field asymmetric waveform ion mobility tube, which comprises an iron source and faraday plates. One end of the iron source is provided with a gas inlet, while the other end thereof is provided with two or more ground electrode sleeves. The axis position in the middle part of each ground electrode sleeve is provided with a high-voltage unsymmetrical field electrode. And the high-voltage unsymmetrical field electrode inside at least one ground electrode sleeve is a positive high-voltage unsymmetrical field electrode. The high-voltage unsymmetrical field electrode inside at least one ground electrode sleeve is a negative high-voltage unsymmetrical field electrode. The ground electrode sleeves are provided with gas outlets. The gas outlets and the gas inlet are respectively positioned on both left and right sides of the ground electrode sleeves. The gas outlets are provided with the faraday plates. The invention can simultaneously provide two series of detection channels of the positive and negative irons, realize the integration application of the double polarity detection channels, improve the detection range and the accuracy of a high-field asymmetric waveform ion mobility spectrometry, and also shorten the detection time.
Description
technical field [0001] The present invention relates to ion mobility spectrometry, specifically a design and manufacture technology of a new combined high-field asymmetric waveform ion transfer tube. The detection channel of the combined high-field asymmetric waveform ion transfer tube adopts a structurally integrated design, With integrated gas inlet, ion source, migration area, high-voltage asymmetric field electrode, Faraday disk, gas outlet, etc., it realizes the simultaneous detection of ions of different polarities, improves the application range of instrument detection, and shortens the detection time, especially For the detection of unknown samples or mixed systems of electrophilicity and proticity. Background technique [0002] High-field asymmetric waveform ion mobility spectrometry is a material analysis and detection technology continuously developed based on traditional ion mobility spectrometry technology. The first public report was made in 1993 by former Sovi...
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IPC IPC(8): H01J49/26G01N27/64
Inventor 李海洋王卫国杜永斋董璨
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI