Normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint and mass spectrometer

A technology of glow discharge and ion source, applied in the field of detection, can solve the problems of high production cost, complicated mass spectrum, low ion transmission efficiency, etc., and achieve the effect of the best test effect.

Active Publication Date: 2014-12-24
SICHUAN UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies play an important role in various fields, but in the normal pressure environment, the sample ions are susceptible to external interference, which greatly reduces the ion transmission efficiency, which greatly limits the sensitivity of normal pressure mass

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
  • Normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint and mass spectrometer
  • Normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint and mass spectrometer
  • Normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint and mass spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0064] The magnetic field confinement disclosed by the present invention is based on atmospheric pressure microglow discharge desorption mass spectrometry ion source, such as figure 1 As shown, the structure mainly includes an ion source body 1 that generates a microglow discharge at normal pressure, a Helmholtz coil 2 that provides a uniform magnetic field for confining the microglow discharge plasma and sample ions, and generates an electrostatic field to assist focusing charging Particle ring electrode 3 . The current of the Helmholtz coil 2 is provided by a low-voltage DC power supply that can provide current in the range of 0-5A. A feasible size of the Helmholtz coil 2 is 160 mm in inner diameter, 220 mm in outer view, and the center-to-center distance betw...

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 a normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint. The normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint comprises an ion source body used for generating normal pressure micro glow discharge, a Helmholtz coil used for providing a uniform magnetic field for restraining a micro glow discharge plasma and a sample ion, and an annular electrode used for generating a static electric field to assist in focusing charged particles, wherein the ion source body is located in the magnetic field generated by the Helmholtz coil, and ion current generated by the ion source body passes an electric field generated by the annular electrode. The invention further discloses a mass spectrometer adopting the normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint. The normal pressure micro glow discharge desorption mass spectrum ion source based on magnetic field constraint and the mass spectrometer are low in energy consumption, small and exquisite in appearance, simple in structure and easy and convenient to operate, have little influence on the outside, are high in signal enhancement degree, are free of sample pretreatment, carry out analysis quickly, can reach the purpose of harmless analysis, and are clean and free of pollution.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a magnetic field-confined atmospheric pressure microglow discharge desorption mass spectrometry ion source and a mass spectrometer analyzer. Background technique [0002] Mass spectrometry is a method of mass spectrometry by measuring the mass-to-charge ratio of the measured sample ions. As an important detection tool in analytical science, mass spectrometer has the advantages of high sensitivity, fast analysis speed, good selectivity, and can be used in chemometrics. It is widely used in chemistry, chemical industry, materials, environment, geology, energy, medicine, Criminal investigation, life science, sports medicine and other fields, and it plays a huge role in the qualitative and quantitative analysis of trace analytes. For a long time, people have been committed to improving the analytical performance of mass spectrometers, and the improvement of this performance mainly...

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): H01J49/30G01N27/62
Inventor 段忆翔丁薛璐王博
Owner SICHUAN UNIV
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