Changes that occur at the molecular level in the composition of nitrogen compounds of a petroleum sample from the Yuzno-Yagunskoe field during ozonation have been studied by ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry in soft ionization modes. I...
The integration of soft ionization technologies and ultrahigh resolution FTICR mass spectrometry (Fourier transform ion-cyclotron MS) has enabled the examination of molecules, directly from mixtures, with ultrahigh mass resolution and sub-ppm mass accuracy. This ability to observe structure and reactivity...
ICBM-OCEAN:Processingultrahigh-resolutionmassspectrometry dataofcomplexmolecularmixtures JulianMerder$*,JanA.Freund$,UlrikeFeudel$,ChristianT.Hansen$,JeffreyA.Hawkes†, BenjaminJacob+,KatrinKlaproth$,JuttaNiggemann$,BeatrizE.Noriega-Ortega&,Helena
Using liquid chromatography–high-resolutionmass spectrometry (LC–HRMS), we have observed metabolomic changesin stool samples, thought to be associated with the potential disease-modifyingeffect of immunotherapy administered to transgenic Parkinsonian (A53T)mice. Significant elevations ( 0.05) in ...
A broad range of methods can be used for HS characterisation, which include elemental composition, fluorescence spectroscopy, UV/VIS absorption, nuclear magnetic resonance (NMR), stable isotopes and recently Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) (Hertkorn et al., ...
2007. The application of electrospray ionization coupled to ultrahigh resolution mass spectrometry for the molecular characterization of natural organic matter [ ... RL Sleighter,PG Hatcher - 《Journal of Mass Spectrometry》 被引量: 327发表: 2010年 Molecular characterization of dissolved organic matter...
The MFAssignR package was designed for multi-element molecular formula (MF) assignment of ultrahigh resolution mass spectrometry measurements. A number of tools for internal mass recalibration, MF assignment, signal-to-noise evaluation, and unambiguous MF assignments are provided. This package contains ...
Multi-proxy approach involving ultrahigh resolution mass spectrometry and self-organising maps to investigate the origin and quality of sedimentary organic... Multi-proxy approach involving ultrahigh resolution mass spectrometry and self-organising maps to investigate the origin and quality of sedimentary ...
The MFAssignR package was designed for multi-element molecular formula (MF) assignment of ultrahigh resolution mass spectrometry measurements. A number of tools for internal mass recalibration, MF assignment, signal-to-noise evaluation, and unambiguous f
Achieving high mass resolution (m2–m1 >Δm50%, in which m1 and m2 are the closest masses that can just be resolved) is far more challenging experimentally for FT-ICR mass spectrometry than obtaining high resolving power for ions of a single mass (or two ions well-separated in mass). ...