Chemical ioning method based on dielectric blocking discharge and mass ion source

A technology of dielectric barrier discharge and chemical ion, which is applied in the field of mass spectrometry ion source
CN1862760AInactive Publication Date: 2006-11-15TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2006-11-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to chemical ionization base on medium resisting discharging and mass spectrum ion source, it belongs to chemical engineering technique field. It especially relates to active base group ionization to organic matter molecular based on medium resisting discharging technique and mass spectrum ion source used for organic matter detecting. The features are that the medium resisting discharging device is used to ionize the reaction gas that can be used to chemical ionization, the reaction gas is ionized to generate ion and the reaction ion is ion-molecular react with the measuring organic matter to make the organic matter ionization, so mass spectrum can be used t realize detecting. The discharging voltage is 220V-10000V, frequency is 50 Hz to 50MHz, and reaction gas flow velocity is 10ml / min-1000ml / min. The corresponding mass spectrum is also provided. The measuring organic matter can be ionized in this invention, and it can be realized in atmospheric pressure environment, the device volume is small, energy consumption is low.
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Description

Technical field:

[0001] The chemical ionization method and mass spectrometry ion source based on dielectric barrier discharge belong to the field of chemical and chemical technology, and especially relate to the mass spectrometry ion source technology based on the ionization of organic molecules by the active groups generated by dielectric barrier discharge, and then the detection of organic matter. Background technique:

[0002] At present, the common mass spectrometric ionization methods mainly include: electron ionization source (EI), chemical ionization source (CI), fast atom bombardment source (FAB), electrospray ionization source (ESI), atmospheric pressure chemical ionization source (APCI), laser Parse source (LD), etc. Among them, electron ionization source and chemical ionization source are mainly used for ionization of volatile organic samples. The electron ionization source relies on electron bombardment to ionize the sample, the structure is simple and easy to i...

Claims

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