Determination method applicable to purification effect of passive air purification product on TVOC

Abstract

The invention provides a determination method applicable to the purification effect of a passive air purification product on TVOC. The method includes the steps of: S1. preparing a TVOC contamination liquid; S2. maintaining consistent test conditions to a test chamber and a blank chamber, and putting a to-be-tested sample in the test chamber; S3. adding the TVOC contamination liquid prepared by S1 at an equal amount to the test chamber and the blank chamber; S4. acquiring the initial concentration of TVOC in the two experimental chambers, and after a period of reaction, acquiring the terminate concentration of TVOC in the two experimental chambers respectively; and S5. conducting test analysis and calculating the natural attenuation rate of the blank chamber and the purification efficiency of the to-be-tested sample on TVOC pollutants. The method provided by the invention uses the experimental chambers special for air purification detection, can effectively prevent the leakage of TVOC pollutants, also reduces the experimental operation error and shortens the whole test cycle, and significantly improves the test accuracy and result repeatability, and can be used for identification and evaluation of the purification performance of a passive air purification product on TVOC pollutants.

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular to a method for measuring the TVOC purification effect of passive air purification products. Background technique [0002] In recent years, with the rapid development of social economy, people have higher and higher requirements for office and residential decoration. New building materials, especially chemical synthesis building materials, are widely used; various spices, cosmetics, etc. have gradually become necessary in people's lives. Indispensable supplies. These building materials or spices, cosmetics, etc. directly or indirectly release various pollutants, causing indoor air pollution. Among them, volatile organic compounds (VOCs) are the most toxic, which are highly toxic to the nervous system and respiratory system of the human body, and can cause pathogenic building syndrome (SBS). As an important evaluation indicator of indoor VOCs pollution, total volatil...

AI Technical Summary

Problems solved by technology

However, the relevant measurement standards for the purification performance of various passive air purification products are relatively messy. The existing domestic standards are mainly aimed at the determination of the purification effect of a single type of pollutant, such as GB / T 23761-2009 and QB / T 2761- 2006, etc., but these standards only stipulate the determination method for the purification effect of single pollutants such as formaldehyde, benzene, toluene, xylene, etc.

TVOC is a mixture containing 9 different main components at the same time. There are interaction effects between the molecules of each component compound, and there are also large differences in the volatility performance and analysis methods of each substance, which affects the purification performance test results. The accuracy of the

So far, there is no domestic method specifically suitable for the determination of the purification effect of passive air purification products on TVOC pollutants, which undoubtedly limits the healthy and orderly development of this industry