Polycyclic organic matter. A class of chemical compounds; organic, multiring compounds which include polycyclic aromatic hydrocarbons and heterocyclic compounds containing nitrogen, oxygen, and sulfur.
Abbreviation for Particulate Organic Matter. This is usually split into large (or sinking) POM and small (or suspended) POM. Large POM is typically greater than 50 m in diameter, sinks at rates around 100 m/day, and is usually sampled with sediment traps. It consists mainly of marine snow, zooplankton fecal pellets and intact organisms. Small POM is typically between about 1 and 50 m in diameter, sinks very slowly (if at all), and is sampled by filtering sea water. See Najjar (1991).
Polycyclic Organic Matter. A class of air toxics defined in the US Clean Air Act as compounds with more than one benzene ring and a boiling point of 100°C and higher. Includes practically all of diesel PAH material.
Polycyclic organic matter. CAS Number: 50-32-8. A broad class of compounds that includes polynuclear aromatic hydrocarbon compounds (PAHs). POM compounds are formed during combustion and are present in the atmosphere as particulate matter. Sources of air emissions include cigarette smoke, vehicle exhaust, home heating, laying tar, and grilling meat. Learn More... See Also PAHs
Polycyclic organic matter. A broad class of compounds that is formed primarily from combustion, and is present in the air in particulate form. Sources are diverse and include vehicle exhaust, fires, and hazardous waste sites. Because of limited emissions data, for NATA, POM has been separated into two categories. 7-PAH consists of 7 species of POM (identified above and evaluated separately in NATA).
Polycyclic organic matter. substance formed by thermal reactions with organic matter, particularly with fossil fuels, that is rich in polycyclic aromatic hydrocarbons.