Multichannel rotary extractive electrospray ionization mass spectrometry ion source

Abstract

The invention discloses a multichannel rotary extractive electrospray ionization mass spectrometry ion source. The multichannel rotary extractive electrospray ionization mass spectrometry ion source comprises an injector mounting part, at least two injector fixing parts, a spraying device mounting part, a metal ring, an insulating ring, a voltage conducting part, a front end support part, a front end connecting part, a spraying device fixing part, at least two ion source mounting parts, at least two ion source fixing parts, a spraying device, at least two spraying needles, a motor transmission part, a bearing, a motor, an injecting pump and the like. According to the ion source, the spraying needles are driven by a stepper motor to rotate to ensure that sprayed mists (electric mist or electroneutral mist) are mixed uniformly, so the ionization efficiency is improved, the strength and stability of mass spectrum signals are improved, and multicomponent or all components in a sample can be analyzed simultaneously and used for researching sample extraction or a gaseous phase / liquid phase reaction among different mists.

Description

technical field [0001] The invention relates to the field of mass spectrometry analysis, in particular to a multi-channel rotary extraction electrospray ionization mass spectrometry ion source. Background technique [0002] Mass spectrometry is currently one of the most sensitive analytical methods and is widely used in many fields such as chemistry, environment, food, and life sciences. A mass spectrometer is usually composed of a sample introduction system, an ion source, a vacuum system, a mass analyzer, a detector, a data processing system, etc., and the role of the ion source is to ionize the sample. Because sample ionization is the premise of mass spectrometry, the development of ion source technology is directly related to the application range of mass spectrometry. There are many designs of ion sources, such as electron bombardment ion source (EI), chemical ionization source (CI), field ionization / field desorption ionization source (FI / FD), fast atom bombardment sou...

AI Technical Summary

Problems solved by technology

The sample ionization ability of this method is weak, and the intensity, signal-to-noise ratio and stability of the mass spectrometry signal are not as good as ESI, and the ultrasonic frequency used in this method will increase the temperature of the sample solution, which is not conducive to the detection of natural samples such as proteins

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