Photochemistry of chrysene adsorbedon several types of particle

The photochemistry of chrysene adsorbed on 6 types of particles was studied. Their half-lives de-termined on the different kinds of particles are different. The half lives of chrysene adsorbed on fly ash arelonger than on alumina or glass particles. This shows that fly ash can inhibit photodegradation of chrysene.The half lives of chrysene adsorbed on ET and KA fly ash in which the Fe or C content is high are long. Thephotochemical products of chrysene adsorbed on glass particles were identified. These products are phenan-threnquinone , benzanthrone and dihydrobenz(aianthracenl (2Hi one. This is a reaction of photoxidationfor chrysene toward ozone under conditions of this study.