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首页> 外文期刊>International journal of mass spectrometry >Ion Mobility Mass Spectrometry: The design of a new high-resolution ion mobility instrument with applications toward electronic-state characterization of first-row transition metal cations
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Ion Mobility Mass Spectrometry: The design of a new high-resolution ion mobility instrument with applications toward electronic-state characterization of first-row transition metal cations

机译：离子淌度质谱：一种新型高分辨率离子淌度仪的设计，可用于第一行过渡金属阳离子的电子态表征

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The design of an instrument that couples a 2-m-long, high-resolution ion mobility drift tube with a quadrupole mass spectrometer is described. The system has been designed to be capable of separating/resolving ionic species having collision cross sections that differ by approximately 1%. Ion funnels are positioned at both the entrance and exit of the drift tube to maximize ion transmission into and out of the drift region of the system. The quadrupole mass analyzer has a mass range of m/z = 1-500. To characterize the performance of the instrument, the reduced mobilities for both the ground-state and electronic excited-state configurations of the first-row transition metal cations have been measured. The results obtained are compared to reduced mobilities previously reported. In all cases, ions were generated using pulsed-laser vaporization of metal targets. The reduced mobility of Sc+ is presented here for the first time. A discussion of the relative merits of short and long drift-length mobility instruments is included, as well as an examination of the accuracy expected in the present instrument. (C) 2016 The Authors. Published by Elsevier B.V.
机译：描述了将2 m长的高分辨率离子迁移率漂移管与四极质谱仪耦合的仪器的设计。该系统已被设计为能够分离/分辨碰撞截面相差约1％的离子物质。离子漏斗位于漂移管的入口和出口，以最大程度地将离子传输到系统的漂移区域和从系统的漂移区域中转移出去。四极杆质量分析仪的质量范围为m / z = 1-500。为了表征仪器的性能，已经测量了第一行过渡金属阳离子的基态和电子激发态构型的迁移率降低。将获得的结果与先前报道的减少的运动性进行比较。在所有情况下，离子都是使用金属靶的脉冲激光汽化产生的。首次出现了Sc +迁移率降低的问题。包括对短和长漂移长度迁移率仪器相对优点的讨论，以及对本仪器中预期精度的检验。 （C）2016作者。由Elsevier B.V.发布

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