General information

Polycyclic aromatic hydrocarbons (PAH) describe substances (components may include for instance: Acenaphtene, Anthracene, Fluorene, Pyrene, etc.) that are often found together in groups of two or more (11). BTEX (acronym for Benzene, Toluene, Ethylbenzene and Xylene) is a group of related volatile organic compounds (12). In some definitions found in literature it is only referred to BTX, where ethylbenzene is not included. Hydrocarbons are compounds of hydrogen and carbon in various combinations that are present in petroleum products and natural gas. Some hydrocarbons are major air pollutants, some may be carcinogenic and others contribute to photochemical smog (13).

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Source: EUR-Lex (Cellar) · retrieved 2026-09-07