Various measured itemsVOCThe total is called total volatile organic compoundsTVOC（Total Volatile Organic Compounds）.

TVOCAt room temperature, the saturated vapor pressure exceeds133．32paIts boiling point is50℃ to250℃ exists in the air in a form that can evaporate at room temperature. Its toxicity, irritability, carcinogenicity, and special odor can affect the skin and mucous membranes, causing acute damage to the human body. World Health Organization（WHO）The National Academy of Sciences in the United States/National Research Council（NAS/NRC）The institution has been emphasizingTVOCIt is an important type of air pollutant.TVOCThe main classifications include benzene, alkanes, aromatic hydrocarbons, alkenes, halogenated hydrocarbons, esters, aldehydes, ketones, etc.

fixed typePIDPhoton organized organic volatile emission detection, installed at approximately chimney location1/3Open a high-temperature hole, insert a sampling probe, and align the sampling port with the sample gas in the opposite wind direction for sampling analysis.