TNT和DNT化学电离[2M+H]^+和[3M+2H]^(++)离子的生成及其质谱-质谱研究

MS/MS STUDY OF [2M+H]^+ AND [3M+2H]^(++) CLUSTER ION STRUCTURES FORMED BY CHEMICAL IONIZATION OF TNT AND DNT

最新观察到三硝基甲苯(TNT)和二硝基甲苯(DNT)等同系物在甲烷化学电离质谱(CIMS)条件下均能生成[2M+H]^+离子。碰撞活化分解—质谱—质谱(CAD MS/MS)分析表明,它们是由2个中性分子结合1个质子并由氧—氢—氧型键构成的缔合离子。另外,由部分DNT异构体生成的另一类有趣的[3M+2H]^(++)双电荷缔合离子也在研究中首次发现。

[2M+H]^+ ions formed by chemical ionization of isomeric samples of TNT and DNTare observed. CAD MS/MS analysis shows that these ions are binuclear clusters withO-H-O's hydrogen bonding. Another interesting dual-charge tri-nuclear cluster ions[3M+2H]^(++) are also observed in this paper.