高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (9): 1270.

• 研究论文 • 上一篇    下一篇

一些双电荷离子的气相碎裂反应

詹东亮1, 朱育芬1, 刘淑莹2, 辛保民2, 贾维平2, 张法义3, 黄承义3, 孙宏伟3   

  1. 1. 中国科学院广州化学研究所, 长春 130022;
    2. 中国科学院长春应用化学研究所;
    3. 南开大学中心实验室
  • 收稿日期:1992-10-29 修回日期:1993-03-21 出版日期:1993-09-24 发布日期:1993-09-24
  • 通讯作者: 刘淑莹.
  • 作者简介:第一作者:男, 27岁, 硕士, 助研.
  • 基金资助:

    国家自然科学基金

Fragmentations of Some Doubly Charged Ions in the Gas Phase

ZHAN Dong-Liang1, ZHU Yu-Fen1, LIU Shu-Ying2, XIN Bao-Min2, JIA Wei-Ping2, ZHANG Fa-Yi3, HUANG Cheng-Yi3, SUN Hong-Wei3   

  1. 1. Guangzhou Institute of Chemistry, Academia Sinica, Guangzhou;
    2. Chuangchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022;
    3. Central Laboratory, Naikai University, Tianjin
  • Received:1992-10-29 Revised:1993-03-21 Online:1993-09-24 Published:1993-09-24

PDF (PC)

被引次数

2

摘要： 借助质量分析离子动能谱和串联质谱研究了由电子轰击产生的双电荷离子的单分子亚稳碎裂及碰撞诱导分解过程,讨论了两种实验方法导致的差别因素.此外,根据质量分析离子动能谱提供的双电荷离子电荷分离反应的动能释放值计算了两电荷中心间距的最小值,以判别按不同电荷分离方式碎裂的双电荷离子的过渡态结构.

关键词: 双电荷离子, 质量分析离子动能谱, 串联质谱, 苯胺类化合物, 硝基苯类化合物

Abstract: The unimolecular fragmentation and collision-induced dissociation (CID) of doubly charged ions generated by electron impact (EI) were studied by mass analyzed ion kinetic energy spectrometry(MIKES) and tandem mass spectrometry(MS/MS).The factors leading to the differences between the experimental results from above two methods mainly include ion kinetic energy and analyzer types.In addition, the intercharge distances of doubly charged ions at the moment of fragmentation were approximately calculated on the basis of the kinetic energy releases given by MIKESfor charge separation reactions, which can be used to distinguish the transition structures of doubly charged ions fragmenting in different charge separaton ways.

Key words: Doubly charged ions, Mass analyzed ion kinetic spectrometry (MIKES), Tandem mass spectrometry(MS/MS), Anilines, Nitrobenzenes

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