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Ion mobility spectrometer and migration tube thereof

A technology of ion mobility spectrometer and migration tube, which is applied in the field of ion migration, can solve the problems of resolution and sensitivity reduction, and achieve the effect of improving resolution and sensitivity, ensuring length, and overall square shape

Active Publication Date: 2012-08-29
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of ion that can meet the trend of miniaturization without reducing the resolution and sensitivity in view of the above-mentioned defects in the prior art that the resolution and sensitivity will be reduced when miniaturization is required. Migration Tubes for Migration Spectrometers

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  • Ion mobility spectrometer and migration tube thereof
  • Ion mobility spectrometer and migration tube thereof
  • Ion mobility spectrometer and migration tube thereof

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] The transfer tubes of ion mobility spectrometers in the prior art are mostly linear. However, when miniaturization is required, the original structure can only be reduced in proportion to reduce the length of the transfer tube, but this will lead to ion migration. The resolution and sensitivity of the spectrometer will be reduced. Aiming at this defect, the present invention provides a transfer tube of an ion mobility spectrometer. The base tube of the transfer tube is curved, so that it complies with the trend of miniaturization of the ion mobility spectrometer and does not reduce the resol...

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Abstract

The invention discloses an ion mobility spectrometer and a migration tube thereof. The migration tube comprises a bent base tube. The technical scheme adopted by the embodiment of the invention is that: the migration tube of the ion mobility spectrometer is the bent base tube, so that compared with the linear migration tube, the migration tube is more compact in structure and size, the length of the migration tube is ensured while the ion mobility spectrometer is reduced in size, and the resolution and the sensitivity of the ion mobility spectrometer are effectively improved. In addition, the overall appearance of the bent migration tube is more square, a peripheral supporting system (such as a temperature control system) is more simple and convenient to design, and the working effect is better.

Description

technical field [0001] The invention relates to ion migration technology, in particular to an ion mobility spectrometer and a migration tube thereof. Background technique [0002] Ion Mobility Spectrometry (IMS, Ion Mobility Spectrometry) is an instrument that detects sample substances based on the difference in the migration speed of ions in an electric field. The basic principle is: to make the detected sample vapor or gasified solid Particles are ionized to form ions, and then under the action of a weak electric field, the ions undergo directional migration in the transfer tube, and the detector at the end of the transfer tube measures the change of ion current with time in real time, and the ion mobility can be calculated according to the change of current (That is, the migration speed of ions under the action of unit electric field strength). Because under certain conditions, the mobility of various material ions is specific and related to factors such as the mass of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/26H01J49/02G01N27/62G01N27/622
Inventor 倪凯王晓浩唐飞陈熠余泉严翔刘顶峰
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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