外部数据系统可实现增强的 (和可持续的) 富里埃变换质谱成像,用于传统的混合线性离子陷-轨道陷平台
Franklin E Leach1, Konstantin O Nagornov2, Anton N Kozhinov2
1Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States.
Journal of the American Society for Mass Spectrometry
|July 20, 2024
概括
升级传统的富里叶变换 (FT) 质谱仪 (MS) 用先进的数据处理提高了性能. 这种具有成本效益的方法提高了生物分析应用的质量分辨能力,精度和动态范围.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
背景情况:
- 遗留的里叶变换 (FT) 质谱仪 (MS) 是强大的,但缺乏现代性能.
- 对于许多实验室来说,下一代仪器仪表往往是成本极高的.
- 基于现场的升级提供了一个可行的解决方案,以延长现有的MS平台的寿命.
研究的目的:
- 通过外部数据采集和处理系统评估混合线性离子陷 (LTQ) - 轨道轨道质谱仪的性能提升.
- 为了展示这个升级系统的质谱成像能力.
- 评估与原始规范相比,关键性能指标的改进.
主要方法:
- 使用外部高性能数据采集和处理系统增强混合线性离子陷 (LTQ) - Orbitrap质谱仪.
- 在实验采集过程中实现真吸收模式FT处理.
- 评估性能指标,包括质量分辨能力,质量精度和动态范围,特别是在质谱成像方面.
主要成果:
- 升级后的FTMS系统实现了与当前平台相提并论的性能.
- 在质量分辨能力,质量精度和动态范围方面观察到显著的改进.
- 传统平台展示了检测可用的时间域信号长达5秒的能力,产生比原始规格高出8倍的质量分辨能力.
结论:
- 外部数据处理系统可以有效地增强传统的FT-MS平台,提供具有成本效益的升级路径.
- 升级后的LTQ-Orbitrap系统显示出显著的性能改进,使其适合于像质谱成像等苛刻的应用.
- 遗留系统中的扩展信号检测解锁了更高的质量分辨能力,扩展了它们的实用性和价值.
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