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Citation: Wang Su-Hua, Chen De-Wen. The Study on the Photochemical Degradation of ρ-Substituted Sdium Phenylsulphonate[J]. Acta Physico-Chimica Sinica, ;1996, 12(04): 315-319. doi: 10.3866/PKU.WHXB19960406 shu

The Study on the Photochemical Degradation of ρ-Substituted Sdium Phenylsulphonate

Wang Su-Hua ,
Chen De-Wen

1.
Institute of Chemistry,Academia Sinica,Beijing 100080

Received Date: 6 July 1995
Available Online: 15 April 1996

The photoreaction behaviour of p-substituted sodium phenylsulphonate in aqueous solution and colloidal system has been studied by means of spin trapping-ESR method. The results indicated that the reaction processes and the intermediate free radicals formed were dependent of the pH values as well as the existence of colloid. The sulfur-centered radicals SO3- , which were the main product were observed, and the carboncentered radicals and hydrogen radicals were also detected in a certain range of pH values. It was discovered that the primary rate of free radical generation changed with the pH values in an exponential from while pH<4.
- ESR-spin traping,
- Sodium sulfanilate,
- Photolysis,
- CdS colloid,
- Radical intermediate
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