Some thermo-unstable or nonvolayile nitrocompounds were analyzed by DEI-MS and signi-ficant molecular ion peak was obtained, and structural information was offered by fragment ions.

• 采用DEI-MS技术分析了一些热不稳定难于气化的硝基化合物,得到了明显的分子离子峰,并由碎片峰提供结构信息。