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High magnetic field asymmetrical and suction compound ion migration spectrometer

A high-field asymmetric and ion mobility spectrometry technology, which is applied in the field of high-field asymmetric and inhalation compound ion mobility spectrometers, can solve the problems of losing means and losing ion information, etc.

Inactive Publication Date: 2014-06-11
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] High-field asymmetric waveform ion mobility spectrometry achieves the purpose of selecting target ions by applying a specific compensation voltage, and loses ion information that requires other compensation voltages; while inhalation ion mobility spectrometry continuously records ion information of all mobility, but loses the selection means of specific ion detection

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  • High magnetic field asymmetrical and suction compound ion migration spectrometer
  • High magnetic field asymmetrical and suction compound ion migration spectrometer
  • High magnetic field asymmetrical and suction compound ion migration spectrometer

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Embodiment Construction

[0025] The invention provides a high-field asymmetric and suction composite ion mobility spectrometer.

[0026] High-field asymmetric and suction hybrid ion mobility spectrometers, including ion mobility regions,

[0027] A pair of rectangular plate-shaped electrodes arranged parallel to each other are used as high-field asymmetric electrodes; a pair of rectangular plate-shaped electrodes arranged parallel to each other are used as suction-type symmetrical electrodes; four poles composed of high-field asymmetric electrodes and suction-type symmetrical electrodes The plate serves as the side wall to form a square cylinder with openings at the left and right ends. The high-field asymmetric electrode plate is perpendicular to the suction-type symmetrical electrode plate, and the inner space of the square cylinder is the ion migration area;

[0028] An ion source is provided at the left end of the square cylinder, and a shielding electrode and a receiving electrode are sequentiall...

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Abstract

The invention discloses a high magnetic field asymmetrical and suction compound ion migration spectrometer. After a radio frequency voltage is exerted on a high magnetic field asymmetrical waveform ion migration spectrometer, an offset voltage is scanned within a certain range so that sample ions can be detected by passing through a migration area under the special offset voltage, the sample ions which are not matched with the offset voltage arrive at a detection electrode of a suction ion migration spectrometer under the combined action of an electric field of the suction ion migration spectrometer and an electric field of the high magnetic field asymmetrical ion migration spectrometer, and therefore sample ion information disappeared in the single high magnetic field asymmetrical ion migration spectrometer can be obtained. The ion information is not lost, and more comprehensive sample information is provided for actual application and scientific research.

Description

technical field [0001] The invention belongs to the two-dimensional analysis technology of ion mobility spectrometer in the field of chemical analysis, in particular to a high-field asymmetric and suction composite ion mobility spectrometer. Background technique [0002] High-field asymmetric waveform ionmobility spectrometry (FAIMS) uses the difference in ion mobility between high and low fields to separate ions. The sample is carried by the carrier gas into the ionization area, and then the ionized sample ions enter the migration area. The migration zone is generally two parallel flat plates or a coaxial cylindrical structure. A radio frequency electric field with an asymmetric waveform is applied to one of the plates, and the other is grounded. In the migration area, the ions will vibrate up and down in the direction perpendicular to the direction of the carrier gas under the action of the high-frequency electric field. Due to the difference in the mobility of ions in ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/00H01J49/06G01N27/62G01N27/624
Inventor 李杨李海洋王卫国赵琨王祯鑫
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI