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A kind of vocs detection method in the air

A detection method and air technology, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of detection results affected by other factors, cumbersome detection process, inaccurate detection, etc., and achieve comprehensive and accurate VOCs composition and concentration. Simple detection method and good repeatability

Active Publication Date: 2022-06-21
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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Problems solved by technology

Existing methods for the detection of volatile organic compounds in the air mainly include gas chromatography, mass spectrometry, and high-performance liquid chromatography; The result is affected by other factors, and the detection is not accurate
[0003] Through the above analysis, the problems and defects of the existing technology are: the existing detection method has high requirements on the sample, and the sample needs to be pretreated, the detection process is cumbersome, and has hysteresis, and the detection result is affected by other factors. precise

Method used

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  • A kind of vocs detection method in the air
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  • A kind of vocs detection method in the air

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[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0034] In view of the problems existing in the prior art, the present invention provides a method for detecting VOCs in the air. The present invention is described in detail below with reference to the accompanying drawings.

[0035] like figure 1 As shown, the method for detecting VOCs in the air provided by the embodiment of the present invention includes:

[0036] S101, determine the location of the sampling point, collect air samples, and use a pump to pass the air samples through an adsorbent to collect VOCs.

[0037] S102 , the collected VOCs are enriched through the VOCs adsorption treatment device in the ...

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Abstract

The invention belongs to the technical field of detection of volatile organic compounds, and discloses a method for detecting VOCs in the air. The position of the sampling point is determined, air samples are collected, and a pump is used to pass the air samples through an adsorbent to collect VOCs; The device enriches the collected VOCs; uses GC-FID / MS to analyze the composition and concentration of VOCs in the air for the enriched VOCs samples; analyzes the formaldehyde content in the indoor air by acetylacetone spectrophotometry; Configure standard sample solutions of various volatile compounds and draw a standard curve, and analyze the enriched VOCs samples to obtain corresponding detection results. The detection method of the present invention has high accuracy, good repeatability, low detection limit, no need to process samples, low requirements for collected air samples, simple detection method, avoids repeated sampling, simplifies detection steps, and simultaneously High sensitivity.

Description

technical field [0001] The invention belongs to the technical field of volatile organic compound detection, in particular to a method for detecting VOCs in the air. Background technique [0002] At present, volatile organic compounds (volatile organic compounds, VOCs) are precursors that form photochemical smog, ozone and secondary organic aerosols, which have serious impacts on human health and the natural ecological environment. The detection of volatile organic compounds in the existing air mainly There are gas chromatography, mass spectrometry and high liquid chromatography; the above methods have high requirements on the sample, and need to preprocess the sample, the detection process is cumbersome, and has hysteresis, and the detection results are affected by other factors, and the detection is inaccurate. [0003] Through the above analysis, the existing problems and defects in the prior art are as follows: the existing detection methods have high requirements for sam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/08G01N30/88
CPCG01N30/08G01N30/88
Inventor 刘艳霖朱睿幸嘉瑜
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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