Polynuclear Aromatic Hydrocarbon (PAH) 1 : All compounds with multiple benzene rings (2 or more). They are also called Polycyclic Aromatic Hydrocarbons or PAHs
International Association of Oil & Gas Producers OGP, Environmental Performance in the E&P industry (Exploration and Production - of Hydrocarbons), 2009 data, Report No. 442, London, UK 2009. http://www.ogp.org.uk/pubs/442.pdf, (Explor and Prod of Hydrocarbons - Brit) {769}