气相中苯胺离子-分子反应产物的串联质谱研究

Study on the Product Ions of IonMolecule Reaction of Phenylamine in Gas Phase by MS/MS

用碰撞诱导解离技术研究了苯胺离子－分子反应产物ｍ／ｚ１８７、１８６和１８５离子及其子离子ｍ／ｚ１７０和１６９的碎裂反应特性，由质子化联苯胺和质子化对－氨基联苯及质子化二苯胺的碰撞诱导解离谱，发现由ｍ／ｚ１８７离子生成的ｍ／ｚ１７０离子具有联苯的结构；由ｍ／ｚ１８６离子生成的ｍ／ｚ１６９离子也具有联苯的结构；ｍ／ｚ１８７、１８６和１８５离子不具有联苯胺的结构，在碎裂反应中具有络合物结构。

The fragmentations of the product ions m/z 187,186 and 185 produced by the ionmolecule reaction of phenlyamine were studied using the CollisionInduced Dissociation(CID)The CID spectra of daughter ion m/z 170 of m/z 187 ion and daughter ion m/z 169 of m/z 186 ion were compared with m/z 170 ions of protonated pphenylphenylamine and diphenylamine and their molecule ions m/z 169,respectivelyThe CID spectrum of m/z 185 ion with that of the protonated benzidineThe fromation mechanism and the structure of the product ions were obtained