影像科学与光化学 ›› 1989, Vol. 7 ›› Issue (1): 1-9.DOI: 10.7517/j.issn.1674-0475.1989.01.1

• 研究论文 •    下一篇

用循环伏安法对彩色显影剂氧化产物脱氨反应的研究

周本茂, 刘春艳, 任新民   

  1. 中国科学院感光化学研究所 北京 100012
  • 收稿日期:1987-05-10 修回日期:1988-07-06 出版日期:1989-02-20 发布日期:1989-02-20
  • 通讯作者: 周本茂

CYCLOVOLTAMMETRIC STUDY ON THE DEAMINATION OF OXIDIZED COLOR DEVELOPER (CD-2)

ZHOU BEN-MAO, LIU CHUN-YAN, REN XIN-MIN   

  1. Institute of Photographic Chemistry; Academia Sinica Beijing, 100012, P. R. China
  • Received:1987-05-10 Revised:1988-07-06 Online:1989-02-20 Published:1989-02-20

摘要: 本文讨论了用循环伏安法测定电化学反应之后的化学反应(EC反应)速率的方法。测定了pH1.85~12.5范围内彩色显影剂CD-2的脱氨速率。结果表明,在酸性溶液中(pH<5),随着pH的增加脱氨速率减小;在碱性溶液中(pH>7),随着pH的增加脱氨速率增大;在中性或弱酸性溶液中pH5-7的范围内几乎与pH无关。同时讨论了脱氨反应机理。

关键词: 循环伏安法, 脱氨, 彩色显影

Abstract: The electrochemical method for measuring rate constants of chemical reaction following electrochemical reaction (EC-reaction) was discussed. The deamination rate constants of oxidized color developing agent CD-2 in the pH range bfetween 1.85 and 12.5 were measured. In acid soulution (pH<5) log k1 decreases with increasing pH. In alkaline solution (pH>7) log kr increases with increasing pH. In neutral or weak acid solution (pH 5-7) the deamination rate constant is nearly pH independent. The mechanism of the deamination reaction was discussed.

Key words: Cyclovoltammetric method, deamination, color development