Mass spectrometer multifunctional multichannel ion source

Abstract

The invention discloses a mass spectrometer multi-channel ion source, which comprises a sample ionization area composed of a high-voltage power supply, a plurality of nozzles and a sample pan as well as at least two channels; a first channel consists of a first capillary tube and a discharge electrode arranged in the first capillary tube and a second channel consists of a sheath gas capillary tube and a sample nozzle arranged in the sheath gas capillary tube; the sample flow emitted out from the second channel collides with the reagent ions emitted out from the first channel so as to form the sample ions or the reagent ions emitted out from the first channel collide with the sample in the sample pan so as to ionize the sample and the ionized sample is led into the inlet capillary tube of the mass spectrometer. The multi-channel ion source of the invention can be connected with the common mass spectrometers such as LCQ, LTQ, TSQ, etc., to ensure that the functions of the common mass spectrometer are upgraded and strengthened so as to realize the quick and sensitive measurement of the mass spectrometry analysis method applied to the gas, liquid, solid and colloidal samples, and can be used for the in-situ, real-time, online and non-destructive analysis in the industry or environmental process.

Description

technical field [0001] The invention relates to the field of analytical chemistry, in particular to an ion source of a mass spectrometer. Background technique [0002] Mass spectrometry is a specialized science and technology widely used in various disciplines to identify compounds by preparing, separating, and detecting gas phase ions. Mass spectrometer is the basis of mass spectrometry research and application. A mass spectrometer generally includes a sample introduction system, an ion source, an ion optical system, a mass analyzer, a detector, a data acquisition and control system, a vacuum system, and the like. Professor R.Graham Cooks, an internationally renowned mass spectrometer master, believes that the heart of a mass spectrometer is the ionization source, whether it is for organic mass spectrometry or inorganic mass spectrometry. Therefore, people have made a variety of designs around ionization sources, such as electron bombardment ionization (EI), chemical ioni...

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Problems solved by technology

However, the sensitivity of this method is not high, it is difficult to directly ana

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