Fig. 1: PAHs are structurally diverse and chemically similar.

Structures of all 24 PAHs addressed in this study, which include all those identified by EU and US authorities as of particular concerns. US EPA 16 (blue and yellow boxes): All 16 PAHs listed in the United States Environmental Protection Agency priority pollutants list. EU “15 + 1”: European Union priority PAHs (green and yellow boxes). Note, 12 PAHs listed in the EU “15 + 1” are tested here.