Passive filling adsorption sampling device for air volatile contaminant concentration detection

A technology for volatile pollutants and concentration detection, which is applied in the direction of sampling devices, etc., can solve the problems of low manufacturing and testing costs, and achieve the effects of low detection and manufacturing costs, reduced testing costs, and large adsorption area

Inactive Publication Date: 2010-10-06
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of existing indoor volatile organic compound pollutant samplers, and provide a passive filling type adsorption sampling device for air volatile pollutant concentration detectio...

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  • Passive filling adsorption sampling device for air volatile contaminant concentration detection
  • Passive filling adsorption sampling device for air volatile contaminant concentration detection

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Embodiment Construction

[0010] The passive filling type adsorption sampling device for detecting the concentration of air volatile pollutants proposed by the present invention is described in detail as follows with reference to the drawings and embodiments:

[0011] The overall structure of the device of the present invention, such as figure 1 As shown, it includes a granular adsorbent 5, a porous housing 1, a base 2, an outer cover 3 and a rubber gasket 4. Among them: the granular adsorbent 5 is filled in the housing 1, the housing 1 is placed on the base 2, and the outer cover 3 is sleeved on the housing 1 outside and sealed with base 2 through gasket 4.

[0012] The embodiments of each part of the device of the present invention are described in detail as follows:

[0013] The porous shell 1 can be made of hydrophobic porous materials such as porous polyethylene or porous polytetrafluoroethylene to form a round tube with one end closed and one end open. The internal volume of the porous shell is not gre...

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Abstract

The invention relates to a passive filling adsorption sampling device for air volatile contaminant concentration detection, belonging to the detection field of indoor environment. The device comprises particle type adsorbent, a porous shell, a base, an outer cover and a rubber washer, wherein the outer cover is filled with the particle type adsorbent, the shell is put on the base, the outer cover is sheathed outside the shell and is sealed with the base by a washer. The device adopts the passive adsorption sampling without any external power; the adsorption sampling along the radial direction of the shell can be realized after the particle type materials are filled so as to have the large adsorption area and save the materials consumption; the target contaminants comprise multiple indoor organic volatile contaminants, which are put into a thermal desorption tube after being sampled, and then the sample concentration is analyzed directly by gas chromatograph with a thermal desorption or an automatic thermal desorption function or a gas chromatography/mass spectrometer; the device is small and portable, is capable of being arranged in the room to detect the average concentration of the contaminant within a certain time and also can be wore by personnel to detect the average exposure within a certain time; and the fillers can be used repeatedly after undergoing the aging and regeneration.

Description

Technical field [0001] The invention belongs to the field of indoor environment detection, and particularly relates to a passive adsorption sampling device for indoor volatile chemical pollutant concentration detection. Background technique [0002] Indoor air quality significantly affects people's comfort, health and work efficiency, and has attracted more and more attention. The high concentration of volatile organic compounds (VOCs) released by indoor objects and decoration materials is one of the main reasons for poor indoor air quality. To ensure a safe and comfortable indoor environment, the detection of indoor chemical pollutants is very important. Scientific detection methods can help indoor users understand whether their daily environment meets safety standards, and take timely and effective treatment and rectification measures for unqualified indoor environments, avoid environmental pollution risks, and meet people's health and comfort requirements. However, the curre...

Claims

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Application Information

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IPC IPC(8): G01N1/22
Inventor 张寅平徐秋健李欣笑莫金汉
Owner TSINGHUA UNIV
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