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Sampling and sample introduction apparatus for aerosol

A technology of sampling device and sampling device, which is applied in the direction of sampling device, measuring device, sample introduction/extraction, etc., to achieve the effects of wide applicability, loss reduction and reasonable structure

Inactive Publication Date: 2012-05-30
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, for aerosol-like samples, especially atmospheric aerosol samples that can be analyzed online, there is no good sampling device

Method used

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  • Sampling and sample introduction apparatus for aerosol
  • Sampling and sample introduction apparatus for aerosol

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Embodiment Construction

[0019] The invention provides an aerosol sampling and sampling device, the specific structure diagram is shown in figure 1 .

[0020] Including sample-loading sheet 4, rollers or rollers; sample-loading sheet 4 is a crawler-type sample-loading sheet, the two ends are respectively wound on the rollers or rollers, and the rollers or rollers are connected to the motor 5 through transmission; the load between the two rollers or rollers A sampling device and a sampling device are sequentially arranged at the position where the sample is located;

[0021] The sampling device includes a cylindrical sampling tube 1, a sampling impact chamber 2, a fan or an air pump 6; the upper end of the sampling tube is open, the lower end of the sampling tube 1 is connected to the sampling impact chamber 2, and the sample-carrying piece passes through the sampling impact chamber 2, The sampling impact chamber 2 communicates with the air inlet of the air pump 6 or the fan;

[0022] The sampling de...

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Abstract

The invention provides a sampling and sample introduction apparatus for aerosol. Application of the apparatus in ion mobility spectrometry facilitates realization of on-line sample acquisition and analysis of sample introduction for ion mobility spectrometry. According to the invention, an impingement aerosol sampling technology enables a sample to be enriched on the surface of a sample slide in a sampling impingement chamber, on-line direct sampling of atmospheric aerosol can be carried out, sampling time can be set to be continuous or discontinuous, and time interval of sampling can also be set; sample introduction is carried out immediately after sampling is finished, thereby enabling sampling and sample introduction to be an organic integral body; sample introduction enables air-flow resistance of surface hot blowing of gas to be reduced; an enriched sample enters into ion mobility spectrometry for detection and analysis after thermal desorption.

Description

technical field [0001] The invention relates to an aerosol sampling injector, in particular to an aerosol sampling and injecting device. The device is applied to ion mobility spectrometry, and can conveniently realize online sample collection and sample introduction analysis of ion mobility spectrometry. Background technique [0002] Under atmospheric pressure, after the sampler vaporizes the sample, the ionization source ionizes the sample into gas-phase ions, and the gas-phase ions accelerate under the action of the electric field. Because different ions have different mobility, the ions reach the detection under the action of the electric field. The time of the instrument is different, so as to realize the analysis and detection of the sample. This analysis method is ion mobility spectrometry. Ion mobility spectrometry itself has the characteristics of high sensitivity, fast analysis speed and portability. It is mainly used in 1. Anti-terrorism system; 2. Anti-drug detect...

Claims

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Application Information

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IPC IPC(8): G01N1/24G01N1/28G01N27/64H01J49/04
Inventor 仓怀文王新王祯鑫渠团帅李海洋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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