Nicole DiDonato

Increased confidence, coverage, and characterization of organic matter through online liquid chromatography hybrid FT-Orbitrap-21T ICR mass spectrometry

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

William Kew

Direct infusion (DI) mass spectrometry analysis of organic matter (OM) is one of EMSL’s primary workflows. It is a powerful and popular means to characterize complex environmental samples. However,…

Character of organic matter in soils of temperate forest ecosystems: Do chlorophyll catabolites (phyllobilins) travel deep?

Lead Institution

Cornell University

Principal Investigator

Carmen Martinez

Project type

Exploratory Research

Soil organic matter (SOM) is the largest reservoir of carbon (C) and nutrients, especially nitrogen (N), in terrestrial ecosystems. SOM is found throughout soil profiles, with content typically…

Chromatographic Approaches for Functional Natural Organic Matter Characterization

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kent Bloodsworth

Electrospray ionization (ESI), coupled to high resolution Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS), is the de facto standard for complex natural mixture analysis. Our…

Influence of soil porous microstructure on the distribution and transport of SOM

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Tamas Varga

There is a need to better understand the relationship between soil pore structure and the fate and transport of soil organic matter (SOM) to improve process-based predictions of OM accessibility…

Isotope ratio measurements for chemical provenance determination

Lead Institution

Michigan State University

Principal Investigator

James Moran

At its core, stable isotope analysis is a well-established technique for supporting chemical forensic attribution efforts. Here, we seek to employ non-traditional isotope methods by leveraging…

Microbes persist: Systems biology of the soil microbiome

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Ljiljana Pasa-Tolic

Microorganisms play key roles in soil carbon turnover and stabilization of persistent organic matter via their metabolic activities, cellular biochemistry, and extracellular products. Microbial…

EMSL Science Overview

Nicole DiDonato

Projects

Increased confidence, coverage, and characterization of organic matter through online liquid chromatography hybrid FT-Orbitrap-21T ICR mass spectrometry

Character of organic matter in soils of temperate forest ecosystems: Do chlorophyll catabolites (phyllobilins) travel deep?

Chromatographic Approaches for Functional Natural Organic Matter Characterization

Influence of soil porous microstructure on the distribution and transport of SOM

Isotope ratio measurements for chemical provenance determination

Microbes persist: Systems biology of the soil microbiome