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drift time ion mobility spectrometer

A technology of ion mobility spectrum and drift time, which is applied in the field of ion mobility, can solve the problems such as the reduction of spectrum recognition, limit the progress and application of DTIMS, and achieve the effect of simplifying spectrum, removing interference and convenient switching

Active Publication Date: 2019-02-26
GUANGZHOU HEXIN INSTR CO LTD
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Problems solved by technology

However, there are several problems that have always troubled the users of ion mobility spectrometry: the identification and quantification of target peaks under complex matrix conditions; the existence of reactive ions, resulting in a decrease in the resolution of the spectrum; deeper research on the composition of ions
The existence of these problems limits the progress and application of DTIMS to a certain extent

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Embodiment Construction

[0018] 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, and do not limit the protection scope of the present invention.

[0019] In one embodiment, the drift time ion mobility spectrometry device of the present invention includes a drift tube, wherein the drift tube includes: a first ion gate, a second ion gate and an outlet grid, by controlling the second ion gate state, controlling the state of the sample ions after electromigration in the pre-drift region between the first ion gate and the second ion gate, wherein, when the state of the second ion gate is an open state, the The sample ions after electromigration enter the post-drift region between the second ion gate and the outlet grid ...

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Abstract

A drift time ion migration spectral device comprises a drift tube. The drift tube comprises the components of a first ion gate, a second ion gate and an outlet mesh. Through controlling the state of the second ion gate, the state of sample ions after electromigration of a front drift region between the first ion gate and the second ion gate is controlled. When the state of the second ion gate is open, the sample ions after electromigration enter a back drift region between the second ion gate and the outlet mesh through the second ion gate, and furthermore arrive at a detector through the outlet mesh. According to the drift time ion migration spectral device, through arranging the double ion gates, the drift time ion migration spectral device has advantages of simplifying spectrum, enlarging signal-to-noise ratio of the spectrum and eliminating interference of reactive ions, realizing convenient switching among various functions, and improving deeper research on a substance.

Description

technical field [0001] The invention relates to the technical field of ion migration, in particular to a drift time ion mobility spectrometer device. Background technique [0002] Ion mobility spectrometry (IMS) is a trace chemical substance analysis and detection technology developed in the 1960s and 1970s. It uses different shapes and sizes (under this condition) The collision cross section Ω) and the charged state (charge size z) of ions have different migration rates, and the substances are separated to realize the analysis of the sample components. The principle and method of IMS are very simple, suitable for rapid on-site detection or analysis, which can be used for the detection of gas samples and the analysis of liquid samples. The instrument can be made portable, and has the advantages of high reliability and low cost. Compared with the usual detection techniques such as mass spectrometry and chromatographic analysis, IMS has many advantages such as simple instrum...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/06H01J49/26
CPCH01J49/06H01J49/26
Inventor 洪义黄晓於剑锋谭国斌朱辉粘慧青
Owner GUANGZHOU HEXIN INSTR CO LTD
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