Which gases are primarily monitored by the vocs online monitoring system? 　　

　　It is known in the literature that on-line monitoring of industrial organic gases in industrial parks is centralized and that the monitoring factors are mainly TVOC and hydrogen sulfide. The oil smoke generated by the catering industry consists mainly of harmful substances such as benzene, toluene, xylene and polycyclic aromatic hydrocarbons. Waste gas pollutants during the operational period consist mainly of sedimentable particles, fine particles and hydrocarbon-type substances. Car exhausts contain large amounts of olefins and polycyclic aromatic hydrocarbons such as butene, toluene and xylene, with the highest concentrations being C8H10 and possibly xylene or ethylbenzene.

　　Our current standards for the monitoring of emissions of VOCs are as follows:

　　Integrated atmospheric pollutant emission standards (GB16297-2004). VOCs monitor benzene, toluene, xylene, chlorobenzene, acetylene, formaldehyde, vinyl chloride, photogas, non-methane total hydrocarbons.

　　2 Standards for the emission of pollutants from the rubber industry (GB27632-2011). VOCs monitor subjects: benzene, toluene, xylene, non-methane total hydrocarbons.

　　3. E-industrial pollutant release standards. VOCs target: benzene, toluene, xylene, trichloroethylene, non-methane total hydrocarbons, isopropanol, acetone, dichlorometane.

　　Emission standards for coating industrial pollutants. Benzene, toluene, xylene, ethylbenzene, styrene, formaldehyde, dichloride methane, acetic acid, total volatile organic matter.

　　It is known in the literature that on-line monitoring of industrial organic gases in industrial parks is centralized and that the monitoring factors are mainly TVOC and hydrogen sulfide. The oil smoke generated by the catering industry consists mainly of harmful substances such as benzene, toluene, xylene and polycyclic aromatic hydrocarbons. Waste gas pollutants during the operational period consist mainly of sedimentable particles, fine particles and hydrocarbon-type substances. Car exhausts contain large amounts of olefins and polycyclic aromatic hydrocarbons such as butene, toluene and xylene, with the highest concentrations being C8H10 and possibly xylene or ethylbenzene.