Novel electric spray sample introduction vacuum ultraviolet single photon ionization mass spectrum analysis apparatus

A vacuum ultraviolet and electrospray technology, applied in the field of analysis devices, achieves the effects of high resolution, low price and small volume

Inactive Publication Date: 2008-12-24
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0005] In order to solve the analysis problem of a large number of complex systems of non-polar components, the present invention provides a novel electrospray injection vacuum ultraviolet single photon ionization mass spectrometry device

Method used

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  • Novel electric spray sample introduction vacuum ultraviolet single photon ionization mass spectrum analysis apparatus
  • Novel electric spray sample introduction vacuum ultraviolet single photon ionization mass spectrum analysis apparatus

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Embodiment

[0022] see figure 1 and figure 2 , a novel electrospray injection vacuum ultraviolet single photon ionization mass spectrometry device, comprising an adjacent photoionization chamber 9 and a differential chamber 7, the photoionization chamber is provided with a time-of-flight mass spectrometer 14, and the time-of-flight mass spectrometer 14 mainly includes an extraction electrode 10. Accelerating electrode 12, ion focusing lens 13, ion mirror 15 and microchannel plate 16; time-of-flight mass spectrometer 14 is connected with photoionization chamber 9, and photoionization region 11 is located at the first pole of extraction electrode 10 and accelerating electrode 12 In the middle of the plate; the corresponding side walls of the photoionization chamber are respectively provided with a lens 17 and a light intensity meter 19, and the photoionization chamber 9 corresponding to the lens 17 is provided with an ionization light source 18, and the vacuum ultraviolet light emitted by ...

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Abstract

The invention relates to a novel electro-spray sampling vacuum ultraviolet single-photon ionization mass spectrometry analysis device which solves the analysis problems of a plurality of non-polarity composition complex systems. The device of the invention comprises a photoionization chamber and a differential chamber which are adjacent to each other; the adjacent side walls of the photoionization chamber and the differential chamber are communicated with a perforated ladle which is convex towards the differential chamber; the outlet of the perforated ladle is corresponding to the middle of the lead-out electrode and acceleration electrode of a time-of-flight mass spectrometer; the inlet of the perforated ladle is corresponding to an inverted horn-shaped nozzle on the side wall of the differential chamber; the inlet of the perforated ladle is in inverted horn shape; an electro-spray needle corresponding to the nozzle is arranged outside the differential chamber; the other end of the electro-spray needle is connected with an injection pump. The device of the invention combines the electro-spray sampling and vacuum ultraviolet photoionization mass spectrometry technique, directly sprays the sample to be measured out of the electro-spray needle during the testing and analysis process, and requires no complex pre-processing and separation of the sample; as the electro-spraying has no restrictions on the thermal stability and volatility of the sample, the device of the invention can be widely applied to the analysis and detection of simple organic matters and complex organic mixtures and can monitor certain organic reaction processes in real time.

Description

technical field [0001] The invention relates to an analysis device for real-time detection of complex natural products, complex organic mixtures, organic reaction products and intermediates, specifically a photon ionization mass spectrometry analysis device. Background technique [0002] Mass spectrometry is an important method for identifying molecular structures. According to the structure and properties of the analyte, there are various kinds of mass spectrometry sampling, separation systems, ionization techniques and mass analyzers. In 1984, Yamashita and Fenn invented electrospray ionization mass spectrometry (ESI-MS) based on the work of their predecessors. The technology is to pass the solution to be tested through a capillary with high voltage under atmospheric pressure, and generate highly charged mist droplets under the action of an electric field of 2-6KV. During the migration process, the mist droplets will gradually decrease due to solvent evaporation or Coulo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/64
Inventor 齐飞唐紫超张泰昌潘洋张允武盛六四
Owner UNIV OF SCI & TECH OF CHINA
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