Atmospheric pressure microglow discharge desorption mass spectrometry ion source and mass spectrometer with magnetic field confinement

Abstract

The invention discloses a magnetic field-confined atmospheric pressure micro-glow discharge desorption mass spectrometry ion source, which includes an ion source body for generating normal-pressure micro-glow discharge, and a uniform intensity for providing confined micro-glow discharge plasma and sample ions The Helmholtz coil of the magnetic field and the ring electrode used to generate an electrostatic field to assist in focusing charged particles; the ion source body is in the magnetic field generated by the Helmholtz coil, and the ion flow generated by the ion source body passes through the electric field generated by the ring electrode. The invention also discloses a mass spectrometer composed of a magnetic field-confined microglow discharge desorption mass spectrometer ion source. The invention has the advantages of low energy consumption, small appearance, simple structure, easy operation, little influence on the outside world, high signal enhancement, no need for sample pretreatment, rapid analysis, non-invasive analysis, clean and pollution-free.

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...

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 spectrometry analysis.

At the same time, this type of atmospheric ion source requires a high energy source, high heat complicates the mass spectrogram, the structure of the ion source is complex, and the production cost is high, so it needs further improvement and improvement

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