波谱学杂志 ›› 1991, Vol. 8 ›› Issue (2): 167-172.

• 研究论文 • 上一篇    下一篇

亚细胞器诱导的2,4,6-三硝基甲苯阴离子自由基的ESR研究

杨正红1, 高梅1, 王敏2, 庄志雄2   

  1. 1. 天然药物及仿生药物国家重点实验室;
    2. 北京医科大学
  • 收稿日期:1990-06-25 修回日期:1990-09-06 出版日期:1991-06-05 发布日期:2018-01-20

ESR STUDIES ON 2, 4, 6-TRINITROTOLUENE FREE RADICAL INTERMEDIATE INDUCED BY MICROSOMAL AND MITOCHONDRIAL NITROREDUCTASE

Yang Zhenghong1, Gao Mei1, Wang Min2, Zhuang Zhixiong2   

  1. 1. Research Laboratories of Natural and Biomimctic Drugs, Mailbox 261;
    2. Beijing Medical University, Beijing 100083
  • Received:1990-06-25 Revised:1990-09-06 Online:1991-06-05 Published:2018-01-20

摘要: 本文在无氧条件下利用ESR分别观察了肝脏和晶状体的微粒体及线粒体酶在NADPH存在下还原三硝基甲苯(TNT)的过程,检测到参数为g=2.0048±0.0005,A对位N=1.215mT,A对位N=0.800±0.010mT,AH=0.122±0.0206mT的自由基信号,并通过电子计算机对ESR谱的模拟证明该自由基信号为TNT硝基阴离子自由基,根据其超精细分裂常数认为,其不配对电子的电子云密度主要分布在对位硝基上。

关键词: TNT, ESR, 硝基阴离子自由基

Abstract: Electron spin resonance spectra were observed during the enzymatic reduction of 2, 4, 6-Trinitrotoluene (TNT) respectively by rat hepatic and lens microsomes or mitochondria in anaerobic conditions at room temperature. With the evidence of ESR simulation of computer, the spectra indicated that TNT anion radical was present and its parameters are:g=2.0048±.0005, A (Npara)=1.215 mT, A (Northo)=0.800±.010 mT, A (H)=0.122±.020 mT, with 20mW of microwave power and 100 kHz of modulation frequency. The hyperfine splitting constants of TNT anion radical implied that the unpaired electron density in TNT was mainly distributed in para-nitro group.

Key words: TNT, ESR, TNT anion free radical