Ion mobility spectrometer

An ion mobility spectrometer and ion mobility technology, applied in the field of ion mobility spectrometers, can solve the problems of low sampling efficiency of semi-permeable membranes, achieve the effect of improving transmission efficiency and reducing requirements

Active Publication Date: 2012-07-04
NUCTECH CO LTD +1
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of the above-mentioned prior art is that a controllable low air pressure is formed on one side of t

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
  • Ion mobility spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Although shown in different drawings, the same reference numerals are used to designate the same or similar components. For clarity and conciseness, detailed descriptions of known functions and constructions incorporated herein will be omitted since they would otherwise obscure the subject matter of the present invention.

[0023] see figure 2 with image 3 , the structure adopted by the present invention includes sample injectors 14 arranged in sequence along the transfer tube, containing shapes such as image 3 The semi-permeable membrane 15 that the metal mesh of A clamps, has the ionization region 16 of micropore 29, has central hole shape such as image 3 The focusing electrode 17 of B has a central hole shape such as image 3 The ion storage end electrode 18 that has micropore of C, has central hole shape such as image 3 B's s...

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 discloses an ion mobility spectrometer which comprises a sample injector, a semipermeable membrane, an ionization area and an end electrode which are sequentially arranged along a transference tube, wherein one or a plurality of gas inlets are arranged at the side of the ionization area, which is close to the semipermeable membrane, and are connected with a needle valve and a first filtering device and are used for feeding gas; the end electrode is provided with at least one hole of which the diameter is less than that of each gas inlet; and a hole is arranged at the position of the ionization area, which is close to the end electrode, and is connected with a gas extracting pump for extracting gas. According to the invention, due to the adoption of the structure, the gas flow rate of a pump connected with the ionization area is controlled, a high gas resistance is formed due to a micropore structure and the application of the needle valve and a low gas pressure is formed in the ionization area and at the position of the semipermeable membrane, so that the permeating efficiency of the semipermeable membrane is greatly improved; and due to a double metal mesh clamping structure of the semipermeable membrane, the semipermeable membrane cannot be raised due to the low gas pressure.

Description

[0001] This application is a divisional application of the No. 200810116735.5 invention patent application entitled "Ion Mobility Spectrometer" submitted to the China Patent Office on July 16, 2008. technical field [0002] The invention relates to a detection device for detecting narcotics and explosives using ion migration technology, belongs to the technical field of safety detection, and in particular relates to an ion mobility spectrometer, which can effectively improve the sampling efficiency. Background technique [0003] The ion mobility spectrometer realizes the resolution of ions according to the different drift speeds of different ions under a uniform weak electric field. It usually consists of sample injection part, ionization part, ion gate, migration area, collection area, readout circuit, data acquisition and processing, control part, etc. [0004] The prior art uses a semi-permeable membrane, which lowers the requirement of the ion mobility spectrometer on th...

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): G01N27/64
Inventor 李元景张清军彭华张阳天
Owner NUCTECH CO LTD
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