Reconciling solids and solutions: Molecular characterization of dissolved organic matter across the major soil types and ecosystems of the United States
EMSL Project ID
50684
Abstract
This Rapid Proposal will facilitate completion of data analysis central to a broader research effort investigating soil organic matter (SOM) stabilization and vulnerability using a multi-scale approach and spanning a broad range of ecological domains, soil types, and land uses in the U.S. As part of this broader effort, we are working to generate the first continental-scale fluorescence model of soil extracts coupled with molecular characterization by Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) via an EMSL Accelerated Science Project led by Nancy Hess. The Rapid request is targeted at completing data analyses related to that work. Specifically, we aim to use FTICR-MS along with an intensive characterization of soil characteristics relevant to SOM stabilization and vulnerability to gain new insight into the molecular composition of DOM in soil solutions to further our understanding of DOM composition at the molecular scale across the range of ecosystems and soil orders present in North America. Additionally, we will use FTICR-MS to elucidate the molecular structure of components isolated in PARAFAC components and lend new interpretive power to fluorescence spectroscopy as a tracer for the migration of specific DOM components from soils to aquatic systems.
Project Details
Project type
Limited Scope
Start Date
2019-03-05
End Date
2019-05-05
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members