物理化学学报 >> 1998, Vol. 14 >> Issue (05): 458-462.doi: 10.3866/PKU.WHXB19980515

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对氨基苯磺酸钠的光化学动力学的ESR研究

王素华, 陈德文   

  1. 中国科学院化学研究所，北京 100080
  • 收稿日期:1997-07-14 修回日期:1998-01-04 发布日期:1998-05-15
  • 通讯作者: 陈德文

The Characteristics of the Photochemical Reaction Kinetics of Sodium p-aminophenyl Sulphonate in Condensed Phase

Wang Su-Hua, Chen De-Wen   

  1. Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080
  • Received:1997-07-14 Revised:1998-01-04 Published:1998-05-15
  • Contact: Chen De-Wen

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关键词: 对氨基苯磺酸钠, 光降解, 动力学, 自由基, 胶体

Abstract:

 The photochemical degradation kinetics of Sodium pamino-Phenyl Sulphonate in aqueous solution and CdS colloid systems was studied by means of ESR method, and the kinetics behaviour for both the photoreactions in aqueous solution system and in CdS colloid system was compared. The results indicated that both the initial concentrations of SSN and the presence of CdS colloid obviously affected the photodegradation processes of SSN in the way of enhancing the rate constants for the formation of free radical SO3-•. The kinetics processes of photoreartions were treated by the quasi-stationary analysis method, the results of analysis are consistent with the phenomena observed in our experiments. The experimental results were briefly analyzed and discussed.

Key words: Sodium p-aminophenylsulphonate, Photodegradation, Kinetics, Free radical, CdS colloid