摘要
亚硝酸烷基二酯(ONORONO)由于其双官能团的特殊性具有极高活性而在大气中极易产生烷氧自由基和氮氧化物,从而导致光化学污染和温室效应等,因此研究亚硝酸烷基二酯的解离机理对理解其在大气中的光化学及热化学作用过程具有着重要意义。本文采用气质联用等方法(GC-MS)研究了六种二酯(1,2-、1,3-亚硝酸丙二酯,1,2-、1,3-、2,3-和1,4-亚硝酸丁二酯)在70eV的电子轰击能量下的解离机理,发现其断裂碎片对二酯的结构具有着特征性指示作用,并结合理论计算对其不同产物碎片所对应的解离路径进行了讨论及分析。
Alkyl dinitrites with two functional groups can easily produce alkoxy radicals and nitric oxide in the atmosphere.Their high activity has led to photochemical air pollutions,greenhouse effects and so on,thus studying the decomposition mechanism of alkyl dinitrites has important significance for understanding their photochemical and thermochemical role in the atmosphere.In this work,the dissociation mechanism of six alkyl dinitrites was investigated by mass spectrometry under the electron impact energy of 70 eV,and we found the rupture fragments had characteristic directivity for the structures of alkyl dinitrites.Ab initio calculations were also adopted to discuss and explain the dissociation mechanism of alkyl dinitrites.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2016年第S1期451-452,共2页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金面上项目(21173024
21373033)资助
关键词
亚硝酸二酯
质谱
电子轰击
解离机理
Alkyl dinitrites
Mass spectrum
Decomposition mechanism
Electron impact
