Ambient air volatility organic compound dewatering and enriching method and device

A technology for volatile organic compounds and ambient air, applied in measuring devices, sampling, instruments, etc., can solve the problems of cumbersome control, complex equipment structure, large resistance, etc., and achieve the effect of reducing volume dead zone

Pending Publication Date: 2020-04-24
江苏国技仪器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing devices for enriching samples have complicated equipment structures, cumbersome controls, and relatively high resistance when samples flow through valves and pipelines

Method used

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  • Ambient air volatility organic compound dewatering and enriching method and device
  • Ambient air volatility organic compound dewatering and enriching method and device
  • Ambient air volatility organic compound dewatering and enriching method and device

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0038] The technical solution provided by the embodiments of the present invention is to provide a method for dewatering and enriching volatile organic compounds in ambient air, including the following process:

[0039] refer to figure 1 , figure 1 Shown is the ambient air sample enrichment process, the ambient air sample is dewatered through the water removal trap 10, and the volatile organic compounds are enriched through the enrichment trap 20;

[004...

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Abstract

The invention discloses an ambient air volatility organic compound dewatering and enriching method. The method comprises the following steps of dewatering an ambient air sample and enriching volatileorganic compounds; purging an enrichment trap through helium, and purging and removing water and oxygen existing in the enrichment trap; heating a water removal trap and the enrichment trap, purging the water removal trap through nitrogen or zero-order air to remove ice condensed in the water removal trap, desorbing substances adsorbed by the enrichment trap, and feeding into a detector for detection through the helium; and cooling the water removal trap and the enrichment trap to a set temperature, and waiting for sampling triggering to return to an ambient air sample enrichment process. Theenvironment air volatility organic compound dewatering and enriching method is easy and convenient to control and is capable of improving accuracy. In addition, the invention also discloses an environment air volatility organic compound dewatering and enriching device.

Description

technical field [0001] The invention relates to the technical field of detection of volatile organic compounds in ambient air, in particular to a water removal and enrichment method and device for volatile organic compounds in ambient air with simple structure, convenient control and improved accuracy. Background technique [0002] With the development of the economy and the improvement of people's living standards, people pay more and more attention to the quality of life, and the ambient air is an important factor affecting the quality of life. [0003] In recent years, air pollution has seriously affected air quality, and has had an important impact on human living environment and physical health. Among them, the volatile organic compounds in the ambient air are an important indicator affecting the quality of the ambient air. When the concentration of volatile organic compounds in the air is high, the concentration level is ppm or ppb level, and the existing technology c...

Claims

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Application Information

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IPC IPC(8): G01N1/34G01N1/40
CPCG01N1/34G01N1/405
Inventor 徐维嘉张相发范小波王艳珍张建军张力
Owner 江苏国技仪器有限公司
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