摘要：Decomposition of benzenesulfonate, the aromatic part of alkylbenzenesulfonate as the synthetic detergents, was experimented by ozone and UV radiation, and these pathway and mechanism were investigated. Formic acid, oxalic acid, glyoxal, glyoxylic acid, maleic acid and sulfate ion were detected as the decomposition products of benzenesulfonate in water. The same decomposition products were detected on the simultaneous treatment with ozone+UV radiation and ozone alone. But their rapid formation and decomposition were confirmed from the results of simultaneous treatment and benzenesulfonate as the starting material was decomposed more rapidly. Sulfate was formed from sulfonic group of benzenesulfonate, and the final concentration might be equal mol of the initial concentration of benzenesulfonate. Further decomposition of each decomposition products detected from benzenesulfonate were investigated. The reactions proceeded more rapidly in the simultaneous treatment for all materials. It was not easy to decompose oxalic acid in water by ozone+UV radiation, however oxalic acid formed from glyoxal, glyoxylic acid and maleic acid by ozone+UV radiation were decomposed easily. These results were considered the reactions proceeded as the chain reactions in excited states by UV radiation.
