Synonyms: Polycycliccompounds, arom. hydrocarbons; Arenes, polycyclic; Arenes, polycyclic, dihydroxyepoxy;Arom. hydrocarbons, polycyclic, conjugated; Arom. polycyclic hydrocarbons;Aromatic hydrocarbons, fused-ring; Aromatic hydrocarbons, polycyclic,conjugated; Aromatic hydrocarbons, polynuclear; Condensed arom. hydrocarbons;Conjugated polycyclic arom. hydrocarbons; Dihydroxyepoxy polycyclic aromatichydrocarbons; Fused-ring arenes; Fused-ring arom. hydrocarbons; Hydrocarbons,aryl, polycyclic; Hydrocarbons, polyarom.; PAH; Polcyclic aromatichydrocarbons; Polyarenes; Polycyclic arenes; Polycyclic arom. hydrocarbons;Polycyclic aromatic hydrocarbons; Polycyclic conjugated arom. hydrocarbons;Polycyclic, dihydroxyepoxy aromatic hydrocarbons; Polynuclear aromatichydrocarbons