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Assembling method of ultraviolet lamp in ion migration spectrum device and ion migration spectrum device

A technology of ion mobility spectrometry and assembly method, which is applied in the field of ion mobility spectrometry equipment, can solve problems affecting the efficiency of ions entering the migration region, and achieve the effect of improving efficiency and sensitivity

Active Publication Date: 2012-07-18
THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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Problems solved by technology

[0011] The biggest defect of adopting this method is that the placement position of the light-emitting end face of the ultraviolet lamp must be reserved in the ionization area, and the ionization area is a closed electric field. Once the closed electric field is destroyed, it will greatly affect the efficiency of ions entering the migration area.

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  • Assembling method of ultraviolet lamp in ion migration spectrum device and ion migration spectrum device
  • Assembling method of ultraviolet lamp in ion migration spectrum device and ion migration spectrum device
  • Assembling method of ultraviolet lamp in ion migration spectrum device and ion migration spectrum device

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Embodiment Construction

[0029] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0030] see figure 2 , the present invention adopts a horizontal top-mounted installation method for the ultraviolet lamp, and thereby maintains the integrity of the ionization region, ensuring that the movement direction of ions will not shift when passing through this region, thereby greatly improving the efficiency of ions entering the migration region. Improve instrument detection sensitivity. In addition, the sampling device is installed at the lower end of the ionization zone, and the samples are injected from bottom to top.

[0031] Based on the above principles, the ion mobility spectrometry equipment provided by the present invention adopts a horizontal top-mounted ultraviolet lamp, and the equipment includes an ultraviolet photoioniza...

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Abstract

The invention discloses an assembling method of an ultraviolet lamp in an ion migration spectrum device and the ion migration spectrum device. According to the invention, an installation method of a horizontal top-mounted ultraviolet lamp is employed, completeness of an ionized region can be maintained, that a motion direction of an ion does not deviate when passing the region is ensured, thus efficiency of entering a migration region of the ion is substantially raised, and detection sensitivity of the device is raised.

Description

technical field [0001] The invention relates to an ion mobility spectrometry technology, in particular to an assembly method for a horizontal top-mounted ultraviolet lamp used in a passive ion tube and an ion mobility spectrometry device using the assembly method. Background technique [0002] Ion mobility spectrometry (IMS) is an analytical technique for characterizing chemical ion species based on the difference in the migration speed of different gas phase ions in the gas phase in an electric field. Its principle is simple, and it can provide users with fast and convenient analysis means. Its instrument can be made portable and has the advantages of high reliability and low cost. When the traditional IMS technology is used for analysis and measurement, a beam of ions is introduced into a voltage gradient field, that is, an electric field. When the ion group passes through the gas in the electric field under ambient pressure, it obtains a constant speed, which is called th...

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Application Information

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IPC IPC(8): H01J9/00H01J49/42H01J49/12
Inventor 甘嘉懿陈嘉敏陈勇金洁欧阳光温亚珍
Owner THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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