物理化学学报 >> 1994, Vol. 10 >> Issue (09): 802-808.doi: 10.3866/PKU.WHXB19940907

研究论文 上一篇    下一篇

毛细管柱GC/MS/ESR 联用研究自由基PBN加合物

陈德文, 周建成, 马纫兰, 徐广智, 龙耀庭, 孙祥玉, 赵瑶兴   

  1. 中国科学院化学研究所,北京 100080|中国科学院生态环境研究中心,北京 100085|中国科学院研究生院,北京 100039
  • 收稿日期:1993-03-03 修回日期:1993-08-31 发布日期:1994-09-15
  • 通讯作者: 陈德文

Studies of PBN Spin Adducts by the Combined Technique of Quartz Capillary Column GC/MS/ESR

Chen De-Wen, Zhou Jian-Cheng, Ma Ren-Lan, Xu Gaung-Zhi, Long Yao-Ting, Sun Xiang-Yu, Zhao Yao-Xing   

  1. Institute of Chemistry,Academia Sinica,Beijing 100080|Research Center for Eco-Environmental Science,Academia Sinica,Beijing 100085|Graduate School,Chinese Academy of Sciences,Beijing 100039
  • Received:1993-03-03 Revised:1993-08-31 Published:1994-09-15
  • Contact: Chen De-Wen

摘要:

采用硅烷化方法,并用石英毛细管柱气相色谱与双聚焦质谱仪组成的GC/MS联用系统,首次成功地分析鉴别了六种自由基的PBN加合物,总结了这些自旋加合物的断裂规律.实验结果表明,硅烷化结合GC/MS和自旋捕捉ESR联用技术是确定活泼自由基的一种有效方法.

关键词: 自旋捕捉, 色谱/质谱, 硅烷化, 自由基, 电子自旋共振

Abstract:

A new technique, high resolution quartz capillary column GC/MS/ESR combined with the silanization approach of free radical adduct was successfully used in the analysis and determination of 6 types of PBN spin adducts. Satisfactory mass spectra of spin adducts were obtained. The results show that it is an efficient method for separating and identifying mixed free radicals.

Key words: Spin trapping, GC/MS, Silanization, Free radical, ESR