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High-field asymmetry ion mobility spectrometer (FAIMS) for realizing trace substance full spectrum scanning

A wave-shaped ion migration and ion migration tube technology, applied in instruments, measuring devices, scientific instruments, etc., to achieve the effects of improving stability, realizing full-spectrum scanning, and reducing the volume of the whole machine

Active Publication Date: 2012-09-19
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the shortcomings of the existing FAIMS trace substance detection full-spectrum scanning that cannot achieve high integration, small volume, high stability and short time, the present invention proposes a ring-type FAIMS transfer tube structure, uses ion wind as a gas drive device, and realizes trace substance The cyclic detection meets the needs of FAIMS for full-spectrum scanning of trace substances, and meets the requirements of FAIMS for high integration, small volume, high stability, and rapid detection

Method used

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  • High-field asymmetry ion mobility spectrometer (FAIMS) for realizing trace substance full spectrum scanning
  • High-field asymmetry ion mobility spectrometer (FAIMS) for realizing trace substance full spectrum scanning
  • High-field asymmetry ion mobility spectrometer (FAIMS) for realizing trace substance full spectrum scanning

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Embodiment Construction

[0021] Embodiments of the present invention will be further explained below in conjunction with the accompanying drawings.

[0022] see Figure 1-3 , in the figure, 1 is the circulating ion transfer tube; 2 is the first substrate; 3 is the injection port; 4 is the gas port; 5 is the ion source; 6 is the separation electrode; 7 is the detection electrode; 8 is the discharge electrode; 10 is the outer support beam; 11 is the inner support beam; 12 is the air flow channel; 13 is the second substrate; 14 is the separation circuit; 15 is the detection circuit; 16 is the ion wind circuit; 17 is the master control system; Measure the substance to be measured.

[0023] The materials of the first substrate 2 and the second substrate 13 include ceramics, glass, and silicon chips; the materials of the outer support beam 10 and the inner support beam 11 include ceramics, glass, and silicon chips, and the thickness of the two is the same, and the thickness is from 50 microns to 2 mm; The...

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Abstract

The invention relates to a high-field asymmetry ion mobility spectrometer (FAIMS) for realizing trace substance full spectrum scanning. The high-field asymmetry ion mobility spectrometer comprises a circular ion mobility tube and a measuring and controlling system, wherein the circular ion mobility tube consists of two substrates which are provided with an injection port, a gas port, an ion source, a separation electrode, a detection electrode, a discharging electrode and a traction electrode, are closely combined with an inner supporting beam and an outer supporting beam, and form an annular airflow passage; and the measuring and controlling system comprises a separation circuit, a detection circuit, an ion wind circuit and a total controlling system. Trace substances to be measured are gasified in the injection port, and are motivated by an air channel system consisting of the discharging electrode, the traction electrode and the ion wind circuit so as to circularly move in the annular airflow passage; and the trace substances become an ion group under the function of the ion source, and are separated by the separation electrode and detected by the detection electrode to obtain a complete spectrum diagram. By the FAIMS with the structure, the trace substances are circularly detected; the complete spectrum diagram is obtained; and high-integration, high-stability and separated using accuracy requirements of the FAIMS are met.

Description

[0001] technical field [0002] The invention relates to the field of analysis and detection instruments, in particular to a high-field asymmetric waveform ion mobility spectrometer (FAIMS). Background technique [0003] High-Field Asymmetry Ion Mobility Spectrometry (FAIMS), also known as Differential Mobility Spectrometry (DMS), is based on the ion migration of different material ions under high electric field According to the different characteristics of the nonlinear change of the rate, add a high-low asymmetric waveform high-frequency electric field (high field>10000V / cm, frequency 0.5MHz~20MHz, high-field duty ratio<0.5) in the longitudinal direction of the material ion forward direction, using An ion separation and detection instrument that separates material ions through different differential effects of the electric field. Superimposing a low-frequency variable electric field on the separation electric field can realize the screening of target ions. The volta...

Claims

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Application Information

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IPC IPC(8): H01J49/04H01J49/00G01N27/68
Inventor 陈池来陈然刘有江赵聪王电令孔德义
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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