An ion migration generating device and its control method
A generation device and ion migration technology, applied in the direction of measuring devices, parts of particle separator tubes, instruments, etc., can solve the problems of rapid detection and inconvenience, and achieve the effects of reducing induced current, high sensitivity, and accurate signals
Inactive Publication Date: 2017-01-04
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
Ion detection is a good means to realize the detection of the above substances. At present, the instruments with ion detection performance generally use mass spectrometers, which need to be equipped with huge devices, and rapid on-site detection is very inconvenient.
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[0077] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.
[0078] see figure 1 and image 3 , showing the main components of each unit of the ion migration generating device and control method of the present invention and their interrelationships. Firstly, the ion generating and extracting unit is described, wherein, 1 is a PID lamp, which provides photon flow required for gas ionization. 4 is the left electrode of the PID lamp, 3 is the right electrode of the PID lamp, and the two electrodes are tightly covered on the PID lamp 1 through the PID lamp housing 2 . Such as Figure 1a , Figure 1c , Figure 1d As shown, the left electrode lead terminal 4-1 of the PID lamp is drawn out from the left lead hole 2-3 on the PID lamp shell; the right electrode lead end 3-1 of the PID lamp is drawn out from the right lead hole 2-2 on the PID lamp shell . PID lamp left electrode lead terminal 4-1 and ...
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The invention discloses an ion migration generating device and its control method, which comprises an ion generating and drawing unit, an electric field potential gradient generating unit, an ion information collecting unit and a circuit control system; wherein, the ion generating and drawing unit includes an ion generating module, a gas circuit Module, ion extraction module, ion control gate module; the electric field potential gradient generation unit is composed of multiple electric field rings and multiple insulating rings; the ion information collection unit includes ion current receivers, ion current receiver insulators, ion current receivers Shielding cup and ion flow sheet; under the action of the circuit control system, the ion generation and extraction unit excites the sample gas in the form of ions and then enters the electric field potential gradient generation unit. Because the flight time of different ions in the electric field is different (the speed of movement is different) , so after collecting this information to form a spectrum, the substance to be detected can be analyzed. The invention can be used as a substance detection instrument in the field of precision analysis.
Description
technical field [0001] The invention relates to an ion migration generating device and its control method. Under the mutual cooperation with the circuit control system, the sample gas is ionized into ions and then enters the electric field to move. Since different ions move at different speeds in the electric field (different flight times) ), so after collecting this information to form a spectrum, the substance to be detected can be analyzed. The invention can be used as a substance detection instrument in the field of precision analysis. Background technique [0002] On-site rapid detection of trace and low-concentration volatile organic compounds, such as explosives, drugs, chemical warfare agents and other related public safety fields, is becoming more and more important. Ion detection is a good means to realize the detection of the above substances. At present, the instruments with ion detection performance generally use mass spectrometers, which need to be equipped wi...
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IPC IPC(8): H01J49/26H01J49/02G01N27/62
CPCH01J49/0013G01N27/622
Inventor 孙强冯旭东赵建刘英王健郭邦辉张建忠李淳李灿
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI