Ion mobility spectrometer

A technology of ion mobility spectrometer and ion mobility tube, which is applied to the parts of particle separator tubes, sample introduction/extraction, etc., can solve the problems of unfavorable detection of trace substances, complicated installation and replacement, high detection limit, etc., and achieve simple The effect of efficient detection

Inactive Publication Date: 2019-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For gas sampling, a membrane sampling device is generally used. The installation and replacement of the membrane sampling device is complicated, and the permeation efficiency is low, so the detection limit is high, which is not conducive to the detection of trace substances.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ion mobility spectrometer
  • Ion mobility spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] One aspect of the present invention proposes an ion mobility spectrometer, including an ionization source 1, a dust filter device 8, a sampling pump 2, an ionization zone 17, a reaction zone 18, and a migration zone 19 arranged in sequence along the transfer tube, and the ionization zone 17 and the reaction zone 18 is provided with a plate microporous electrode 3 '. Flat-shaped microporous electrodes Originally flat-shaped electrodes with through-holes in the middle, where 0.1≤through-hole diameter≤3mm. A gas inlet 9 and a gas outlet 20 are provided on the side wall of the ionization zone 17. The gas outlet 20 is connected to the atmosphere through the air pump 2, and the gas inlet 9 is connected to the sample port gas source or the dust filter 8 to the atmosphere. in sample collection. The reaction zone 18 is separated from the migration zone 19 by the ion gate 11 .

[0010] A drift gas inlet 14 is provided on the ion transfer tube near the Faraday disk 15 , and a ca...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an ion mobility spectrometer which comprises a filtering device, an ionization source, an air pump and an electrode. A microporous electrode is arranged in the ionization zone to control the internal gas flow in a migration tube, since micropores form large gas resistance, when airflow in the ionization zone flows, the impact on a migration zone is small, and therefore, theimpact of air pressure on the migration tube is reduced.

Description

technical field [0001] The invention relates to a detection device for detecting toxic and harmful gases by using ion mobility spectrum technology, which belongs to the technical field of safety detection, and specifically relates to an ion mobility spectrum, which can effectively detect gas substances. Background technique [0002] Spectrum consists of sample injection part, ionization part, ion gate, migration area, collection area, data acquisition and processing, control and other parts. [0003] For gas sampling, a membrane sampling device is generally used. The installation and replacement of the membrane sampling device is complicated, and the permeation efficiency is low, so the detection limit is high, which is not conducive to the detection of trace substances. The present invention solves the above existing problems. Contents of the invention [0004] The object of the present invention is to provide a method for detecting gas, which improves the sampling and d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01J49/04
Inventor 李东明仓怀文李京华李海洋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap