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Polycyclic aromatic hydrocarbon

A polycyclic aromatic hydrocarbon (PAH) is any member of a class of organic compounds that is composed of multiple fused aromatic rings. Most are produced by the incomplete combustion of organic matter—by engine exhaust fumes, tobacco, incinerators, in roasted meats and cereals, or when biomass burns at lower temperatures as in forest fires. The simplest…

Nomenclature and structure, Distribution in the environment & Detection and optical properties

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Nomenclature and structure

BenzeneUS EPACDCHeteroatomsSubstituents
42 related topics

Distribution in the environment

SorptionSedimentsLogarithmicallyMolecular massBiodegradation
62 related topics

Detection and optical properties

UniverseGas chromatography-mass spectrometryLiquid chromatographyUV absorbance spectraFluorescence
24 related topics

Human health

SkinBladderLiverStomachRegulation and Oversight
17 related topics

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Overview

Nomenclature and structure

Bonding and aromaticity

Properties

Sources

Biodegradation

Distribution in the environment

Human health

Regulation and oversight

Detection and optical properties

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Map overview Semantic statistics

Polycyclic aromatic hydrocarbon

Nodes280
Edges279
Triples108
Avg. degree1.99
Density0.007143
Components1

How this topic connects Entity context

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Polycyclic aromatic hydrocarbon

Top relations

related to External links · 28
Polycyclic aromatic hydrocarbon → An Interview, Archived, Astrobiology MagazineOregon State University, ATSDR, Bridged Fused Ring NomenclatureDatabase, Department, Environmental Protection Agency, EPA Fact Sheet, Health, Human ServicesFused Ring, January, May, NASA Spitzer Space Telescope, Office, PAH, PAH IR Spectroscopic DatabaseNational, PAH Theoretical DatabaseNASA Ames, PAHs, Pollutant Inventory, Polycyclic Aromatic Hydrocarbon Fact
related to Regulation and oversight · 16
Polycyclic aromatic hydrocarbon → Agency, ATSDR, Disease Registry, EFSA, EPA, European Food Safety Authority, European Union, NIOSH, PAHs, Priority, Some, The European Commission, Toxic Substances, United States Environmental Protection, US Agency, US EPA
related to Detection and optical properties · 10
Polycyclic aromatic hydrocarbon → Detection, Most PAHs, PAH, PAHs, Structures, The, These, This, Thus, UV
related to Nomenclature and structure · 8
Polycyclic aromatic hydrocarbon → By, CDC, Most, PAH, PNA, Sources, The, US EPA

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Important terminology

pahs pah also exposure may rings aromatic coal carbon sediments cancer compounds two organic hydrocarbons air polycyclic sources pollution carcinogenic

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
coalinstance ofMany of them are also found in fossil fuel deposits0.80text
in petroleuminstance ofMany of them are also found in fossil fuel deposits0.80text
the US EPAinstance ofSources0.80text
CDC consider naphthalene to be the simplest PAHinstance ofSources0.80text
dung or crop residues contribute more than half of annual global PAH emissionsinstance ofwood-burning and combustion of other biofuels0.80text
particularly due to biofuel use in Indiainstance ofwood-burning and combustion of other biofuels0.80text
Chinainstance ofwood-burning and combustion of other biofuels0.80text
the United States.A year-long sampling campaign in Athensinstance ofdominating outputs in industrial countries0.80text
Greece found a thirdinstance ofdominating outputs in industrial countries0.80text
oilinstance ofFossil carbonPolycyclic aromatic hydrocarbons are primarily found in natural sources such as bitumen.PAHs can also be produced geologically when organic sediments are chemically…0.80text
coalinstance ofFossil carbonPolycyclic aromatic hydrocarbons are primarily found in natural sources such as bitumen.PAHs can also be produced geologically when organic sediments are chemically…0.80text
perylene can also be generated in anaerobic sediments from existing organic materialinstance ofthe largest moon of the planet Saturn.Minor sourcesVolcanic eruptions may emit PAHs.Certain PAHs0.80text

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