What are the differences between VOC, TVOC and VOCs?

TVOC is one of the three types of organic pollutants in the air (polycyclic aromatic hydrocarbons, volatile organic compounds, and aldehyde compounds) with more severe impacts. VOC refers to organic compounds with a saturated vapor pressure exceeding 133.32 Pa at room temperature, boiling between 50°C and 250°C. They exist in the air in the form of vapor at normal temperatures. Their toxicity, irritancy, carcinogenicity, and specific odor can affect the skin and mucous membranes, causing acute harm to the human body.

The main components of VOC include hydrocarbons, halogenated hydrocarbons, oxygenated hydrocarbons, and nitrogenated hydrocarbons, such as benzene series, organic chlorides, freon series, organic ketones, amines, alcohols, ethers, esters, acids, and petroleum hydrocarbon compounds.

Due to the low individual concentration and wide variety of volatile organic compounds, they are collectively referred to as VOCs, which is a more accurate term.

Common domestic detection methods for volatile organic compounds (VOCs) mainly include Gas Chromatography-Flame Ionization Detection (GC-FID), Fourier Transform Infrared Spectroscopy (FTIR), Photoionization Detection (PID). Our company solemnly recommends the solid polymer VOCs sensors from German SEC, with measurable ranges including 0-200ppm, 0-1000ppm, 0-2000ppm, 0-5000ppm, etc. These sensors are easy to use and cost-effective, widely applied in industries such as printing and dyeing, as well as air quality monitoring.