期刊
ANALYTICAL CHEMISTRY
卷 87, 期 17, 页码 8917-8924出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.5b02049
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资金
- German Federal Ministry of Education and Research (BMBF)
- German Center for Diabetes Research (DZD) [01GI0925]
- Kompetenznetz Diabetes mellitus (Competence Network for Diabetes mellitus) - German Federal Ministry of Education and Research [FKZ 01GI0804, 01GI1104A, B]
Ultra high pressure liquid chromatography coupled to mass spectrometry (UHPLC-MS) has become a widespread analytical technique in metabolomics investigations, however the benefit of high-performance chromatographic separation is often blunted due to insufficient mass spectrometric accuracy. A strategy that allows for the matching of UHPLC-MS data to highly accurate direct infusion electrospray ionization (DI-ESI) Fourier transform ion cyclotron resonance/mass spectrometry (FTICR/MS) data is developed in this manuscript. Mass difference network (MDiN) based annotation of FTICR/MS data and matching to unique UHPLC-MS peaks enables the consecutive annotation of the chromatographic data set. A direct comparison of experimental m/z values provided no basis for the matching of both platforms. The matching of annotation-based exact neutral masses finally enabled the integration of platform specific multivariate statistical evaluations, minimizing the danger to compare artifacts generated on either platform. The approach was developed on a non-alcoholic fatty liver disease (NAFLD) data set.
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