偶氮二异丁腈的CI-CAD质谱碎裂过程

The CI-CAD Mass Spectrometric Decomposition Process of Azodiisobutyronitrile

摘要: 目的：确定偶氮二异丁腈的质谱图及其质谱碎裂机理。方法：采用ＣＩ－ＣＡＤ串联质谱技术。结论：其ＣＩ质谱图中主要离子峰有ｍ／ｚ１６５，ｍ／ｚ１１０和ｍ／ｚ６９；在ＣＡＤ条件下，主要离子峰有ｍ／ｚ１１０、ｍ／ｚ６９以及ｍ／ｚ５４和ｍ／ｚ４１。主要碎裂过程为脱去氮气的热分解过程和电荷中心引发的ｉ断裂过程，此外还有少量涉及重排的深度碎裂

Abstract: Aim:To determine the mass spectrum and the mass spectrometric decomposition process of azodiisobutyronitrile.Method:using CI CAD MS/MS technology.Results:On the CI mass spectrum the main ion peaks are m/z165,m/z110 and m/z69.However,on the CI CAD MS/MS mass spectrum,the main ion peaks are m/z110,m/z69,m/z54 and m/z41.The main decomposition processes are:Thermal decomposition process with releasing N 2,i cleavage process caused by positive charge,and some rearrangement decomposition.