Device for ion generation, transmission and mass spectrometry of a low-vacuum system

An ion transmission, low vacuum technology, applied in the field of analysis and testing, can solve the problems of low writing sensitivity of the instrument device, reduced system detection sensitivity, weak ion signal, etc., to improve the analysis speed and accuracy, save the sample pretreatment process, The effect of reducing maintenance costs
CN111477533APending Publication Date: 2020-07-31常州磐诺仪器有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
常州磐诺仪器有限公司
Publication Date
2020-07-31

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Abstract

The invention relates to the technical field of analytical testing, in particular to a device for ion generation, transmission and mass spectrometry of a low-vacuum system, which comprises an ion source, a primary ion transmission system, an ion mobility spectrometry, a secondary ion transmission system and an ion mass analyzer. A vacuum system of the device has a multi-stage vacuum differential function; wherein the ion source is placed in a chamber with a lower vacuum degree, sample ions to be detected generated by the ion source are efficiently transmitted to the ion mobility spectrometry through the primary ion transmission system and enter the secondary ion transmission system to be efficiently transmitted to the ion mass analyzer after being separated by the ion mobility tube; the device system can improve the ion generation efficiency and the ion transmission efficiency and realize the separation of the ion isomers, thereby improving the ion separation efficiency, the ion transmission efficiency and the detection sensitivity of the whole system.
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Description

technical field

[0001] The invention belongs to the technical field of analysis and testing, and in particular relates to a device for ion generation, transmission and mass spectrometry in a low vacuum system. Background technique

[0002] Ion mobility spectrometry technology refers to the separation of different ions with different mobility under the action of an electric field under low vacuum conditions. It has the advantages of simple structure and fast analysis speed. It is mainly used for online rapid detection of explosives and drugs. Airports, stations, immigration and other occasions. However, due to the low resolving power of ion mobility spectrometry, problems such as false positives or missed negatives are prone to occur when detecting complex mixtures. Therefore, a series of various coupled instrument technologies have emerged to improve the resolving power of ion mobility spectrometry, such as gas chromatography-ion mobility spectrometry, ion mobility spectrom...

Claims

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