甲基异戊酮的离子迁移谱

Ion Mobility Spectrometry of Methyl Isoamyl Ketone

在自行研制的离子迁移谱仪器上,制备了反应离子质子化水团蔟离子[H+(H2O)n],并研究了甲基异戊酮的迁移谱。甲基异戊酮的产物离子峰的个数由浓度决定,当浓度在0.004μg/L时出现一个产物离子峰,当浓度达到0.1μg/L时出现两个产物离子峰,当浓度达到1μg/L时出现一个产物离子峰。甲基异戊酮与反应离子发生反应,生成单体团簇离子和二聚体团簇离子。实验测量了各种离子的约化迁移率。

Reaction ion H＋（H2O）n was made by the homemade ion mobility spectrometry（IMS） apparatus and mobility spectrum of methyl Isoamyl ketone was studied by IMS.The product ion peaks amount of methyl Isoamyl ketone was decided by concentration.One product ion peak was detectable at the concentration of 0.004μg/L,and two product ion peaks were detectable at the concentration of 0.1μg/L and one product ion peak was detectable above the concentration of 1μg/L.The proton transfer was occurred between H＋（H2O）n as reaction ion and methyl Isoamyll ketone.The products were monomeric cluster ion and dimeric cluster ion.The reduced mobility values for various kinds of ions were obtained from the experiment.