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Chemical Characteristics of Sediment Associated Organic Matter


EMSL Project ID
48252

Abstract

The goals of our proposed EMSL research are to develop methods for characterizing natural organic matter (NOM) that is associated with subsurface sediment using unique EMSL capabilities in FTICR MS, and apply these methods to sediment samples obtained from the Old Rifle, CO, site. Although high-resolution mass spectrometry has been developed for dissolved organic matter (DOM) there a significant experimental challenges in using this approach for sediment-associated NOM. Based on preliminary studies, and in collaboration with EMSL researchers, we have developed a strategy for method development (Task 1). Success in this will enable sediment-associated NOM to be characterized from key locations at Rifle (Task 2).
Task 1: Development of extraction and separation methods for quantitative molecular analysis of sediment-associated NOM via FTICR MS.
Task 2: Characterization of sediment-associated NOM as a function of position relative to the water table and along transect.

Project Details

Project type
Exploratory Research
Start Date
2014-03-03
End Date
2014-09-30
Status
Closed

Team

Principal Investigator

Peter Nico
Institution
Lawrence Berkeley National Laboratory

Co-Investigator(s)

Benjamin Gilbert
Institution
Lawrence Berkeley National Laboratory

Team Members

Malak Tfaily
Institution
University of Arizona

Related Publications

Fox PM, PS Nico, MM Tfaily, and JA Davis. 2017. "Characterization of Natural Organic Matter in Low-Carbon Environments: Extraction and Analytical Approaches." Environmental Science & Technology 114(12-22):, doi:10.1016/j.orggeochem.2017.08.009