首页> 外文期刊>Annual Review of Analytical Chemistry >Distance-of-Flight Mass Spectrometry: A New Paradigm for Mass Separation and Detection
【24h】

Distance-of-Flight Mass Spectrometry: A New Paradigm for Mass Separation and Detection

机译:飞行距离质谱:质量分离和检测的新范例

获取原文
获取原文并翻译 | 示例
           

摘要

Distance-of-flight mass spectrometry (DOFMS) offers the advantages of physical separation of ions, array detection of ions, focusing of initial ion energy, great simplicity, and a truly unlimited mass range. DOFMS instrumentation is similar to that of time-of-flight mass spectrometry (TOFMS) and shares its ion-source versatility, batch analysis, and rapid spectral-generation rate. With constant-momentum ion acceleration and an ion mirror, there is a time at which ions of all mass-to-charge values are energy focused at their particular distances along the flight path. A pulsed field orthogonal to the flight path drives the ions to reach the detector array at this specific time. Results from a 0.29-m proof-of-principle instrument verify the theoretically predicted energy focus and demonstrate how the range of mass-to-charge values that impinge on the detector array can be readily changed. DOFMS could be combined sequentially with TOFMS to enable simultaneous scan-less tandem mass spectrometry.
机译:飞行距离质谱仪(DOFMS)具有离子物理分离,离子阵列检测,聚焦初始离子能量,非常简单和真正无限质量范围的优点。 DOFMS仪器与飞行时间质谱仪(TOFMS)相似,并具有离子源的多功能性,批次分析和快速的光谱产生速率。在恒定动量离子加速和离子镜作用下,所有质荷值的离子在一定时间内都将能量集中在沿飞行路径的特定距离处。与飞行路径正交的脉冲场在此特定时间驱动离子到达检测器阵列。 0.29米原理验证仪器的结果验证了理论上预测的能量聚焦,并证明了如何轻松改变撞击在检测器阵列上的质荷比值的范围。 DOFMS可以与TOFMS顺序结合使用,以实现同时无扫描串联质谱。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号