Surface gas flow purging thermal desorption sampling device

A technology of airflow purging and sampling device, which is applied in the field of sampling device of ion mobility spectrometer, can solve the problems of not being suitable for on-site rapid analysis, unable to directly analyze solid and liquid samples, etc., and achieves a reasonable structure and wide applicability. Effect
CN101294933AInactive Publication Date: 2008-10-29DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2008-10-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a thermal desorption sampling device used for surface airflow purging which is characterized by comprising a fixed control device (1) used for controlling whether a sample attachment sheet is clamped tightly, a surface airflow purging device (2) and a clipping seam which is formed between the fixed control device (1) and the surface airflow purging device (2) and is used for inserting a sample channel (3) of the sample attachment sheet; the fixed control device (1) and the surface airflow purging device (2) are connected with each other fixedly or movably; the sampling device provided by the invention can meet the sampling requirement of solid and liquid samples, can realize automatic operation, complete the steps of heating, sampling and analysis needed by the sampling in short time and meet the need that an ion mobility spectrometer carries out fast and on-spot analysis detection; the device provided by the invention has fastness, effectiveness, reasonable structure and wide application, and can provide gas samples for various gas analyzers.
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Description

technical field

[0001] The invention relates to a sampling device of an ion mobility spectrometer, in particular, it belongs to a device for converting solid and liquid samples into gas for sampling in gas analysis instruments. Background technique

[0002] Ion Mobility Spectrometry (IMS) technology is a separation and detection technology that appeared abroad in the 1970s, and was applied to on-site analysis and detection in the 1980s. The gas sample is ionized to form ions, which then drift in an applied electric field. Due to the different mobilities of different samples, the different components in the sample are separated in the transfer tube, and in general, heavier molecules travel slower than lighter molecules. In this way, the composition of the sample can be known from the measured migration time.

[0003] Generally, it is only suitable for direct analysis of gas samples, but not for solid and liquid samples. In actual work, many solid and liquid samples require...

Claims

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