Composite ionization source device

A technology of ionization source and quartz glass tube, which is applied in the field of analysis and detection, can solve problems such as errors, insufficient ionized samples, and inability to accurately characterize, etc., and achieve the effect of expanding the injection area

Active Publication Date: 2019-06-07
SUZHOU UNIV
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  • Abstract
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Problems solved by technology

Often, these ionization sources are used alone, the range of ionized substances is relatively narrow, and it is difficult to ionize some organic macromolecular substances. The ionized sample is not sufficient, which will lead to large errors in the comparison between the detected sample spectrum and the standard library. Therefore, it is impossible to accurately qualitatively and quantitatively analyze its material composition

Method used

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  • Composite ionization source device
  • Composite ionization source device

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Embodiment 1

[0020] See figure 1 As shown, this embodiment discloses a composite ionization source device, comprising a quartz glass tube 2 and a double-layer hollow metal capillary 7 inserted into the quartz glass tube 2 at one end, and the other end of the quartz glass tube 2 is aligned The mass spectrometer interface 11, the quartz glass tube 2 includes the spraying cone tube 5 at the front end and the cylindrical tube 21 at the rear end connected in sequence, the double-layer hollow metal capillary 7 is inserted from the rear end of the cylindrical tube 21, and the front end of the spraying cone tube 5 is provided with The opening is aligned with the mass spectrometer interface 11;

[0021] A high-voltage AC power supply 3 is connected between the double-layer hollow metal capillary 7 and the outer tube wall of the quartz glass tube 2, the double-layer hollow metal capillary 7 includes an inner tube 71 and an outer tube 72, and the outer tube wall of the quartz glass tube 2 A copper r...

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Abstract

The invention discloses a composite ionization source device. The device comprises a quartz glass tube and a double-layer hollow metal capillary tube with one end being inserted into the quartz glasstube, wherein the other end of the quartz glass tube is aligned with a mass spectrum interface. A high-voltage AC power supply is connected between the double-layer hollow metal capillary tube and theouter tube wall of the quartz glass tube; and one end, located outside the quartz glass tube, of the double-layer hollow metal capillary tube is used for feeding air and samples and is connected witha high-voltage DC power supply at the same time, wherein the other end, inserted into the quartz glass tube, of the double-layer hollow metal capillary tube is used for ionizing the samples.

Description

technical field [0001] The invention relates to the field of analysis and detection, in particular to a composite ionization source device. Background technique [0002] As one of the most promising analytical instruments today, mass spectrometry can accurately determine the composition of substances, provide rich structural information, and has the advantages of high sensitivity, low detection limit, accurate qualitative and quantitative, etc. One of the most effective tools for detection. At present, mass spectrometers have played a pivotal role in the fields of food safety, environmental testing, medical diagnosis, proteomics and genomics research. However, in the mass spectrometry technique, the ionization of the sample is a prerequisite step, which shows that the study of the ion source is crucial. Therefore, research on ionization sources with high efficiency, wide application range, good real-time performance and high throughput has always been a hot spot in the fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/10H01J49/16
Inventor 李晓旭葛赛金张英军朱雯飞吴辉钱洁
Owner SUZHOU UNIV
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