GC-FID/MS-based method for detecting pollution features of VOCs in indoor air

A GC-FID, indoor air technology, applied in measurement devices, sampling, instruments, etc., can solve problems such as inability to detect formaldehyde indicators, achieve excellent qualitative and quantitative capabilities, high capture efficiency and desorption efficiency, data integrity and chromatography The effect of increased resolution

Pending Publication Date: 2019-01-18
WUHAN INSTITUTE OF TECHNOLOGY
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The monitoring system also has its limitations, t

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  • GC-FID/MS-based method for detecting pollution features of VOCs in indoor air
  • GC-FID/MS-based method for detecting pollution features of VOCs in indoor air
  • GC-FID/MS-based method for detecting pollution features of VOCs in indoor air

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[0087] 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.

[0088] The application principle of the present invention will be further described below in conjunction with the accompanying drawings.

[0089] like figure 1 As shown, the method for detecting pollution characteristics of VOCs in indoor air based on GC-FID / MS provided by the embodiment of the present invention comprises the following steps:

[0090] S101, using Su-code tank sampling, GC-FID / MS combined technology to analyze the composition and concentration of VOCs in indoor air;

[0091] S102, adopt TH-3000BIV ambient air sampler to sample, and analyze the formaldehyde content in indoor air by acetylacetone sp...

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Abstract

The invention belongs to the technical field of gas detection, and discloses a GC-FID/MS-based method for detecting pollution features of VOCs in indoor air. According to the method, a Summa canisteris adopted for sampling and a GC-FID/MS coupling technique is adopted for analyzing components and concentrations of VOCs in indoor air; and a TH-3000BIV environmental air sampler is adopted for sapling and an acetylacetone spectrophotometric method is adopted for analyzing the content of formaldehyde in the indoor air. According to the method, the adopted GC-FID/MS coupling technique is capable of detecting more than 100 kinds of various VOCs via once sampling; compared with existing detection method, the method disclosed by the invention has the advantages that the data integrity and chromatographic resolution are remarkably improved ad the analysis is more comprehensive and correct; known from indoor pollution conditions, the concentrations of VOCs in indoor environments are gradually reduced along with the increase of decoration duration; and measures such as a pollution source treatment method, a ventilation method, a plant purification method, an adsorption purification method and the like are proposed to reduce the indoor air pollution.

Description

technical field [0001] The invention belongs to the technical field of gas detection, and in particular relates to a pollution characteristic detection method for VOCs in indoor air based on GC-FID / MS. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Generation of VOCs [0004] Volatile Organic Compounds (Volatile Organic Compounds) are referred to as VOCs. According to the definition of the World Health Organization, compounds with a boiling point of 50°C to 250°C and a saturated vapor pressure of more than 133.32Pa at room temperature are a class of organic compounds that exist in the air in the form of steam at room temperature. . Most VOCs compounds have atmospheric chemical reactivity and are important prerequisites for photochemical smog. According to chemical properties, VOCs are classified into eight categories, including aromatic hydrocarbons, aliphatic hydrocarbons, halogenated hydrocarbons...

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IPC IPC(8): G01N30/02G01N30/06G01N1/22
CPCG01N1/2205G01N1/2273G01N30/02G01N30/06G01N2030/045
Inventor 刘煦晴施林宏邵林丽桓永照韦薇蓓程依梦杨虎成杨浦
Owner WUHAN INSTITUTE OF TECHNOLOGY
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