An ion mobility spectrometer and its transfer tube

A technology of ion mobility spectrometer and migration tube, which is applied in the field of ion migration, can solve the problems of reduced resolution and sensitivity, and achieve the effects of improving resolution and sensitivity, compact structure and size, and simple design.

Active Publication Date: 2016-08-03
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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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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  • An ion mobility spectrometer and its transfer tube
  • An ion mobility spectrometer and its transfer tube
  • An ion mobility spectrometer and its transfer tube

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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 includes a curved base tube. Implementing the technical solution of the present invention, since the migration tube of the ion mobility spectrometer adopts a curved base tube, the structure and size are more compact than the linear migration tube, and while realizing the miniaturization of the ion mobility spectrometer, it is ensured that The length of the transfer tube is increased, thereby effectively improving the resolution and sensitivity of the ion mobility spectrometer. In addition, because the overall shape of the curved transfer tube is more square, the design of its peripheral support system (such as temperature control system, etc.) is easier and the work 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, IonMobility Spectrometry) is an instrument that detects sample substances based on the difference in the migration speed of ions in an electric field. Then, under the action of a weak electric field, the ions migrate directional in the transfer tube. The detector at the end of the transfer tube measures the change of the ion current with time in real time, and the mobility of the ion can be calculated according to the change of the current (ie 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 the ion itself, the number of charges, and the spatial structure, so the mobility corresponding to the detected different ...

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Application Information

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Patent Type & Authority Patents(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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