多环芳香烃(Polycyclic Aromatic Hydrocarbons,简称PAH或PAHs)又称多环性芳香化合物或多环芳香族碳氢化合物,伊个化学结构式超过100多种。伊是一种芳香族碳氢化合物,由弗包含杂环或取代基个芳香环所组成。其中有咾多是已知或潜在个致癌物质。迭类化学品中最简单个是具有两个芳环个萘,搭仔三环化合物蒽搭菲。

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