Evaluation of Data-Dependent MS/MS Acquisition Parameters for Non-Targeted Metabolomics and Molecular Networking of Environmental Samples: Focus on the Q Exactive Platform
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
37578818
PubMed Central
PMC10469366
DOI
10.1021/acs.analchem.3c01202
Knihovny.cz E-zdroje
- MeSH
- chromatografie kapalinová metody MeSH
- metabolomika * metody MeSH
- tandemová hmotnostní spektrometrie * metody MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Non-targeted liquid chromatography-tandem mass spectrometry (LC-MS/MS) is a widely used tool for metabolomics analysis, enabling the detection and annotation of small molecules in complex environmental samples. Data-dependent acquisition (DDA) of product ion spectra is thereby currently one of the most frequently applied data acquisition strategies. The optimization of DDA parameters is central to ensuring high spectral quality, coverage, and number of compound annotations. Here, we evaluated the influence of 10 central DDA settings of the Q Exactive mass spectrometer on natural organic matter samples from ocean, river, and soil environments. After data analysis with classical and feature-based molecular networking using MZmine and GNPS, we compared the total number of network nodes, multivariate clustering, and spectrum quality-related metrics such as annotation and singleton rates, MS/MS placement, and coverage. Our results show that automatic gain control, microscans, mass resolving power, and dynamic exclusion are the most critical parameters, whereas collision energy, TopN, and isolation width had moderate and apex trigger, monoisotopic selection, and isotopic exclusion minor effects. The insights into the data acquisition ergonomics of the Q Exactive platform presented here can guide new users and provide them with initial method parameters, some of which may also be transferable to other sample types and MS platforms.
Department of Chemistry and Biochemistry University of Denver Denver Colorado 80210 United States
German Center for Infection Research Partner Site Tübingen Tübingen 72076 Germany
Leibniz Institute of Freshwater Ecology and Inland Fisheries Berlin 12587 Germany
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