VOC and TVOC, what can our air purifier do?

　　According to the WHO definition, volatile organic compounds (VOCs) refer to various organic compounds with a boiling point of 50°C to 260°C under normal pressure. According to their chemical structure, VOCs can be further divided into: alkanes, aromatic hydrocarbons, esters, aldehydes and others. More than 300 species have been identified so far. The most common are benzene, toluene, xylene, styrene, trichloroethylene, chloroform, trichloroethane, diisocyanate (TDI), diisocyanatotoluene, etc.

　　One is the definition of VOC in the general sense, which only explains what volatile organic compounds are, or under what conditions are volatile organic compounds;

　　The other type is the definition in the sense of environmental protection, that is to say, it is the active type of volatile organic compounds, that is, the type of volatile organic compounds that can cause harm.

　　Obviously, from an environmental point of view, volatilization and participation in atmospheric photochemical reactions are very important. It does not constitute a hazard if it does not volatilize or participate in atmospheric photochemical reactions. This is why Europe classifies solvents by their actinic ozone production potential.

　　Their respective concentrations are often not very high indoors, but when several VOCs coexist in indoor air, their combined effect cannot be ignored. Because of their many types and low concentration of individual components, TVOC (representing the total amount of volatile organic compounds in the room) is often used to measure the indoor products such as decoration and furniture in buildings, which is an item of the impact on indoor air quality. Important indicators.

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