用于高分辨率质谱分析的静电离子阱和傅里叶变换测量

Electrostatic ion trap and Fourier transform measurements for high-resolution mass spectrometry.

作者信息

Bhushan K G, Gadkari S C, Yakhmi J V, Sahni V C

机构信息

Technical Physics and Prototype Engineering Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India.

出版信息

Rev Sci Instrum. 2007 Aug;78(8):083302. doi: 10.1063/1.2777195.

DOI:10.1063/1.2777195

PMID:17764318

Abstract

We report on the development of an electrostatic ion trap for high-resolution mass spectrometry. The trap works on purely electrostatic fields and hence trapping and storing of ions is not mass restrictive, unlike other techniques based on Penning, Paul, or radio frequency quadrupole ion traps. It allows simultaneous trapping and studying of multiple mass species over a large mass range. Mass spectra were recorded in "dispersive" and "self-bunching" modes of ions. Storage lifetimes of about 100 ms and mass resolving power of about 20,000 could be achieved from the fifth harmonic Fourier transform spectrum of Xe ions recorded in the self-bunching mode.

摘要

我们报告了一种用于高分辨率质谱分析的静电离子阱的研发情况。该离子阱仅在纯静电场中工作，因此与基于潘宁、保罗或射频四极杆离子阱的其他技术不同，离子的捕获和存储不受质量限制。它允许在大质量范围内同时捕获和研究多种质量的离子。质谱以离子的“色散”和“自聚束”模式记录。在自聚束模式下记录的Xe离子的五次谐波傅里叶变换光谱可实现约100 ms的存储寿命和约20,000的质量分辨能力。