Production of singlet delta oxygen by atmospheric pollutants.
Singlet delta oxygen (1O2) was generated at atmospheric pressure using heterogeneous gas-phase photosensitization. Polycyclic aromatic hydrocarbons (PAH), known constituents of the atmosphere, were found to be efficient sensitizers in the production of singlet delta oxygen under simulated environmental conditions. A novel mechanism involving singlet delta oxygen is proposed in which PAH on particle surfaces are self-activated to form direct-acting mutagens.
D000393:Air Pollutants; D010100:Oxygen / Q000378:metabolism*; D010777:Photochemistry; D011083:Polycyclic Compounds / Q000378:metabolism
D000393:Air Pollutants; D011083:Polycyclic Compounds; D010100:Oxygen