Zum Abbau von polycyclischen aromatischen Kohlenwasserstoffen

Competitive reaction pathways for functionalization and volatilization in the heterogeneous oxidation of coronene thin films by hydroxyl radicals and ozone

“…These results show that O 3 attacks coronene at the lowest bond-localization energy, the phenanthrene-like bonds, to form carboxylic acid products. 14,56 Since our experimental conditions are quite different, possible reaction mechanisms are discussed by analogy to other oxidation reactions on PAHs of similar structure. It should be noted that reaction mechanisms can be somewhat different for branched vs. linear PAH's.…”

Aqueous ozonolysis products of methyl- and dimethylnaphthalenes

“…One problem with these reports is that the precursors to many of the compounds produced were unknown. A simpler approach than studying the complex mixtures in ozone-treated natural or waste water is to characterize incomplete ozonation products from model compounds such as aliphatic alcohols, ketones, acids (9, 10), amino acids, sugars (11), and, perhaps most importantly, benzene derivatives (12-17) and polynuclear aromatic hydrocarbons (18)(19)(20)(21)(22)(23)(24)(25)(26).…”

“…Epoxides of the PAHs, in general, show a tendency to be toxic and carcinogenic (27). The reaction of the simplest PAH naphthalene with ozone in water has been reported (22)(23)(24)(25)(26), but only three of these reports had any specific information about the mechanism or products produced. There have been no studies involving the aqueous ozonation of the methyl-and dimethylnaphthalenes despite the fact that these compounds are known contaminants of potable water supplies at trace levels (28) and they are principal constituents of crude oils and oil products (29) that regularly contaminate our water systems.…”

Comparison of the ozonolysis products of the methylnaphthalenes and dimethylnaphthalenes in hexane, methanol, and water

“…Most studies which characterized incomplete ozonation products were done using model compounds. A few of these studies have involved aliphatic alcohols, ketones, acids (21,22), amino acids, and a sugar (23), but most have involved benzene derivatives (24)(25)(26)(27)(28)(29) and polynuclear aromatic compounds (30)(31)(32)(33)(34)(35)(36)(37). The increased in terest in the benzene derivatives was due to the fact that many, such as the phenols, are toxic and known to be present in industrial wastes.…”