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An aerosol sample collection, enrichment and thermal analysis device

A technology of sample collection and thermal analysis, applied in sampling devices, measuring devices, preparation of samples for testing, etc., can solve the problems of complex analysis process, unsuitable on-site online repeated analysis, large volume, etc.

Active Publication Date: 2022-03-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Filter collectors are more commonly used in the collection of organic samples than impact collectors, but they have the disadvantages of large volume, complex analysis process, and the need for appropriate pre-treatment, so they are not suitable for on-site repeated analysis.

Method used

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  • An aerosol sample collection, enrichment and thermal analysis device
  • An aerosol sample collection, enrichment and thermal analysis device

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Embodiment Construction

[0031] According to the structure diagram figure 1 As shown, the aerosol sample collection, enrichment and analysis device includes: motor 1, carrier gas channel 2, rain shield 3, temperature sensor 4, thermal analyzer 5, electric heating rod 6, aerosol sample collector 7, enrichment Membrane collection 8 , support net 9 , enrichment membrane support tray 10 , fan 11 , thermal desorption sample gas channel 12 , three-way air flow switching valve 13 , and air flow channel 14 .

[0032] The aerosol sample collector 7 is an hourglass-shaped design, which is beneficial to the collection and enrichment of samples. One of its two ends is a rain and dust shield plate 3, and the other end is an enrichment film support tray 10. The center of the enrichment membrane support tray 10 is located at the central lower part of the narrow connecting pipe of the lower funnel of the hourglass-shaped structure of the aerosol sample collector 7 . When the sample passes through this place during ...

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Abstract

Design an on-line continuous collection, enrichment and analysis device for aerosol samples. The device combines an impact collector with a thermal desorber. It has small design volume, high sampling efficiency, compact structure, and easy maintenance. It is especially suitable for on-site continuous acquisition and analysis of miniaturized portable instruments (such as: ion mobility spectrometry, IMS). sample.

Description

technical field [0001] The invention relates to the technical field of aerosol sample sampling and thermal analysis, in particular to an aerosol sample collection, enrichment and thermal analysis device applied to ion mobility spectrometry. Background technique [0002] Aerosols are composed of liquid or solid particles uniformly dispersed in the gas to form a relatively stable suspension system. The aerodynamic diameter of liquid or solid particles is 0.001-100 μm, and the shape is very complex. The liquid particles are approximately spherical, and the solid particles are mostly irregular. [0003] Aerosol samples mainly exist in the form of accumulation mode, and the residence time in the air is relatively long, and the duration and hazard are relatively large. The content of aerosol samples in the atmospheric environment is generally low, and the online collection and analysis of aerosol samples has always been a problem. [0004] Aerosol samples are usually collected wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22G01N1/28G01N27/64
CPCG01N1/2273G01N1/28G01N27/64
Inventor 仓怀文李海洋黄卫李京华
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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