Natural organic matter composition determines the molecular nature of silver nanomaterial-NOM corona

2018 ◽  
Vol 5 (4) ◽  
pp. 868-881 ◽  
Author(s):  
Mohammed Baalousha ◽  
Kamelia Afshinnia ◽  
Laodong Guo
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Organic Matter Composition ◽  
Ft Icr Ms ◽  
Molecular Nature ◽  
Ft Icr

Properties of NOM-corona formulas forming AgNOM-corona determined by FT-ICR-MS.

Molecular insights into the reactivity of aquatic natural organic matter towards hydroxyl (•OH) and sulfate (SO4•−) radicals using FT-ICR MS

2021 ◽  
Vol 425 ◽  
pp. 130622
Author(s):  
Suona Zhang ◽  
Zhineng Hao ◽  
Jingfu Liu ◽  
Leo Gutierrez ◽  
Jean-Philippe Croué
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Ft Icr Ms ◽  
Ft Icr

scholarly journals Unravelling the Role of Lithofacies in Controlling Organic Matter Composition in Unconventional Systems Using Ft-Icr-Ms

2019 ◽  
Author(s):  
Huiwen Yue ◽  
Stefanie Poetz ◽  
Yuanjia Han ◽  
Brian Horsfield ◽  
Andrea Vieth-Hillebrand
Keyword(s):  
Organic Matter ◽  
Organic Matter Composition ◽  
Ft Icr Ms ◽  
Ft Icr

Online Counter Gradient LC-FT-ICR-MS Enables Detection of Highly Polar Natural Organic Matter Fractions

2020 ◽  
Author(s):  
Limei Han ◽  
Jan Kaesler ◽  
Chang Peng ◽  
Thorsten Reemtsma ◽  
Oliver J. Lechtenfeld
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Organic Matter Fractions ◽  
Ft Icr Ms ◽  
Ft Icr

Online counter gradient LC-FT-ICR-MS enables detection of highly polar natural organic matter fractions

2021 ◽  
Author(s):  
Limei Han ◽  
Jan M. Kaesler ◽  
Chang Peng ◽  
Thorsten Reemtsma ◽  
Oliver J. Lichentfeld
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Method Development ◽  
Complex Mixture ◽  
Gradient Elution ◽  
Elemental Ratios ◽  
Organic Matter Fractions ◽  
Development And Validation ◽  
Ft Icr Ms ◽  
Ft Icr

<p>Natural organic matter (NOM) is a highly complex mixture of natural organic molecules. The hyphenation of liquid chromatography (LC) with ESI-FT-ICR MS for the molecular characterization of NOM have shown to be a promising approach. However, due to changing solvent composition during gradient elution in LC-FT-ICR-MS, ionization conditions also change throughout the chromatographic separation process. In this study, we applied a post-LC column counter gradient (CG) to ensure stable solvent conditions for transient ESI-MS signals. SRFA and a peat pore water samples were used as representative dissolved NOM samples for method development and validation. Our results show that in the isocratic range segment, the TIC intensities of CG was increased by a factor of 1.5 fold, as compared to the standard gradient (SG) method. In addition, the application of the CASI mode for low abundance fractions revealed over 3 times more molecular formulas (especially for CHNO, CHOS, CHNOS formula classes) than in full scan mode. The number of detected highly polar NOM compounds (with elemental ratios H/C < 1, O/C > 0.6) were more than 20 times larger for CG-LC mode as compared to direct infusion (DI) (5715 vs 266 MF).We conclude that the new CG-LC-FT-ICR MS method achieved a novel insight into the highly polar fractions of NOM, which are inaccessible in conventional DI measurements.</p><p>Key words: Natural organic matter (NOM), online LC-FT-ICR MS method, CASI mode, ESI</p><p> </p>

scholarly journals Impact of instrument and experiment parameters on reproducibility of ultrahigh resolution ESI FT-ICR mass spectra of natural organic matter

2010 ◽  
Vol 41 (8) ◽  
pp. 725-733 ◽  
Author(s):  
Melissa C. Kido Soule ◽  
Krista Longnecker ◽  
Stephen J. Giovannoni ◽  
Elizabeth B. Kujawinski
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Mass Spectra ◽  
Ultrahigh Resolution ◽  
Ft Icr
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