| Abstract from DBPedia | A polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromatic rings. The simplest representative is naphthalene, having two aromatic rings and the three-ring compounds anthracene and phenanthrene. PAHs are uncharged, non-polar and planar. Many are colorless. Many of them are found in coal and in oil deposits, and are also produced by the combustion of organic matter—for example, in engines and incinerators or when biomass burns in forest fires. Polycyclic aromatic hydrocarbons are discussed as possible starting materials for abiotic syntheses of materials required by the earliest forms of life.多環芳香族炭化水素（たかんほうこうぞくたんかすいそ、英: polycyclic aromatic hydrocarbon、PAH）は、ヘテロ原子や置換基を含まない芳香環が縮合した炭化水素の総称である。縮合環式炭化水素とも呼ばれる。多環芳香族炭化水素には100以上の化学物質がある。 (Source: http://dbpedia.org/resource/Polycyclic_aromatic_hydrocarbon) |
