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在非目标有机气溶分析中的数据独立实验中的CID片段注释:展示一个易于使用的工具
Niklas Karbach1, Thorsten Hoffmann2
1Johannes-Gutenberg University Mainz, 55128, Mainz, Germany.
Analytical and bioanalytical chemistry
|November 18, 2025
概括
本研究介绍了一种用于分析质谱数据的开源工具. 该自动化方法在非定向分析中增强了碎片识别和注释,提高了数据质量并加速了研究.
科学领域:
- 分析化学 分析化学
- 质谱测量质量谱测量
- 蛋白质组学是指蛋白质组学.
背景情况:
- 数据独立获取 (DIA) 方法,如完整的MS/AIF,对于非目标分析 (NTA) 是有价值的,但需要强大的数据处理.
- 在DIA实验中手动分析CID碎片是耗时且主观的.
- 现有的方法可能无法充分利用DIA数据的信息内容来进行全面的样本分析.
研究的目的:
- 提出一个开源工具,用于自动分析和注释CID从前体离子碎片.
- 在非目标HPLC-UHRMS分析中增强全MS/AIF测量的实用性.
- 为了促进前体离子的结构阐明,并改善NTA工作流程.
主要方法:
- 开发一个开源软件工具来处理MS/AIF数据.
- 该工具用于分析28种标准化合物的混合物.
- 自动碎片识别和注释与手动分析的比较.
- 对已识别的化合物的配方预测准确性的评估.
主要成果:
- 该工具自动识别和注释碎片,在71%的化合物中获得与手工分析相匹配或更好的结果.
- 在测试的标准化合物中,配方预测准确度达到96%.
- 该方法提高了原始数据文件的信息价值,并提高了碎片离子的检测极限.
- 工作流提供了更公正的样本视图,这对NTA至关重要.
结论:
- 开发的开源工具简化和增强了DIA质谱数据的分析.
- 自动化的断片注释和识别显著提高了数据质量,加速了科学发现.
- 该工具有效用于前体离子的结构分析,并支持为NTA创建数据库.
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