Determination of benzo[a]pyrene and dibenzopyrenes in a Chinese coal fly ash certified reference material

► 15 PAHs have been determined in a Chinese coal fly ash certified reference material. ► Besides PAHs with certified or reference values 10 additional PAHs are reported. ► Two times higher concentration of benzo[a]pyrene compared to the certified value ► First quantitative data of the carcinogenic dibenzopyrenes in coal fly ash ► The ion trace at 302 Th is similar to those reported from air, coal tar and sediment