An atmospheric pressure glow discharge ion source device

Abstract

The invention provides an atmospheric pressure glow discharge ion source device, which is a high-universality atmospheric pressure open type ion source device capable of being applied to mass spectrometry. The device comprises a first T-shaped three-way valve, a second T-shaped three-way valve, an atmospheric pressure glow discharge generation area, a carrier gas / sample input end, a cooling system, an ion transmission channel and a power supply system, wherein the atmospheric pressure glow discharge generation area is arranged on the first T-shaped three-way valve; the carrier gas / sample inputend is used for inputting a carrier gas and a to-be-analyzed sample into the atmospheric pressure glow discharge generation area and is arranged on the second T-shaped three-way valve; the cooling system is used for cooling the atmospheric pressure glow discharge generation area; the ion transmission channel is used for receiving and transmitting an ionization product generated by the atmosphericpressure glow discharge area; and the power supply system is used for providing electric energy for discharge of the atmospheric pressure glow discharge generation area.

Description

technical field [0001] The invention belongs to the field of mass spectrometry, relates to the technical field of mass spectrometry ion source devices, and more specifically relates to an atmospheric pressure glow discharge ion source device. Background technique [0002] With the rapid development of national economic construction and social life, new challenges have been put forward for today's analysis and testing technology. Mass spectrometry, as a core technical means for material composition and structure analysis, opens a convenient window for the identification and structure analysis of complex substances due to its high sensitivity and high resolution analysis characteristics. How to introduce the analyte into the mass spectrometer in a suitable ion form, that is, the ion source, is directly related to the analytical performance of the mass spectrometer and the field of analysis. Inductively coupled plasma, a type of hard ionization technology with high ionization ...

AI Technical Summary

Problems solved by technology

In the prior art, the micro plasma generated by atmospheric pressure glow discharge is generally exposed to the atmospheric environment. When it is applied to element detection, its low energy density leads to low ionization efficiency of elements.

At the same time, the ion generation and ion transmission design of the atmospheric pressure glow discharge device is compatible with the ion acquisition design of the mass spectrometer, resulting in a low transmission efficiency of ions from the glow discharge part to the mass spectrometer detection part, which limits its analytical performance to a certain extent. further improvement

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