实现基于立方体的费舍尔比率分析,使用总转移全面的三维气体染色学与飞行时间质谱学
Sonia Schöneich1, Caitlin N Cain1, Paige E Sudol1
1Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA.
Journal of chromatography. A
|September 3, 2023
概括
一种新的基于立方体的费舍尔比率分析方法增强了数据处理,用于全面的三维气体染色学. 这种技术改善了复杂样品中尖端分析物的识别,比以前的方法提供了更高的准确性.
科学领域:
- 分析化学 分析化学
- 染色体学 染色体学 是一种染色体学.
- 质谱测量质量谱测量
背景情况:
- 综合的二维气体染色学与飞行时间质谱学 (GC×GC-TOFMS) 提供了高分离功率.
- 用飞行时间质谱法 (GC3-TOFMS) 进行全面的三维气相色谱的进展需要新的数据分析策略.
研究的目的:
- 开发和评估基于立方体的费舍尔比率 (F-ratio) 分析,用于使用GC3-TOFMS数据的监督,非目标研究.
- 提高分析复杂GC3-TOFMS数据结构的效率和有效性.
主要方法:
- 为GC3-TOFMS数据开发基于立方体的F比分析方法.
- 在GC3-TOFMS染色体内构建3D立方体,并计算每立方体和质量通道的F比.
- 使用GC3-TOFMS分析对添加原生和非原生组件的喷气式燃料进行评估.
主要成果:
- 基于立方体的F比分析成功地从GC3-TOFMS数据中确定了32个尖端分析物在前50个热点中,其度比率低至1.1.
- 这种方法发现了更多的分析物和产生更少的假阳性相比,基于的GC×GC-TOFMS数据的F比率分析 (共28个,前50名中的25个).
- 在GC3-TOFMS中从三维 (3D) 列中改进的色谱分辨率有助于增强分析物的可检测性.
结论:
- 基于立方体的F比分析是处理复杂GC3-TOFMS数据的有效方法.
- 这种方法显著提高了复杂混合物中分析物的识别,优于以前的方法.
- GC3-TOFMS的峰值能力和选择性增加,加上这种新的分析技术,代表了分析化学的重大进步.
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