Advanced Molecular Techniques Provide New Rigorous Tools for Characterizing Organic Matter Quality in Complex Systems
Abstract
We report that carbon flux rates are widely understood to be substrate controlled; however, characterizing substrate quality continues to be a challenge. We suggest that, while optical measurements have their place, they are not the only, or the best, tool for characterizing organic matter quality. Nominal oxidation state of the carbon provides a thermodynamically relevant measure, which could be used as a metric of organic matter quality. Lastly, calculating nominal oxidation state of the carbon requires a suite of advanced complementary analysis but is then trivial to calculate from the resulting data sets.
- Authors:
-
- Florida State Univ., Tallahassee, FL (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1490394
- Alternate Identifier(s):
- OSTI ID: 1454626
- Report Number(s):
- PNNL-SA-138120
Journal ID: ISSN 2169-8953
- Grant/Contract Number:
- AC05-76RL01830; SC0010580; SC0012088
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Geophysical Research. Biogeosciences
- Additional Journal Information:
- Journal Volume: 123; Journal Issue: 6; Journal ID: ISSN 2169-8953
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Wilson, Rachel M., and Tfaily, Malak M. Advanced Molecular Techniques Provide New Rigorous Tools for Characterizing Organic Matter Quality in Complex Systems. United States: N. p., 2018.
Web. doi:10.1029/2018JG004525.
Wilson, Rachel M., & Tfaily, Malak M. Advanced Molecular Techniques Provide New Rigorous Tools for Characterizing Organic Matter Quality in Complex Systems. United States. https://doi.org/10.1029/2018JG004525
Wilson, Rachel M., and Tfaily, Malak M. Wed .
"Advanced Molecular Techniques Provide New Rigorous Tools for Characterizing Organic Matter Quality in Complex Systems". United States. https://doi.org/10.1029/2018JG004525. https://www.osti.gov/servlets/purl/1490394.
@article{osti_1490394,
title = {Advanced Molecular Techniques Provide New Rigorous Tools for Characterizing Organic Matter Quality in Complex Systems},
author = {Wilson, Rachel M. and Tfaily, Malak M.},
abstractNote = {We report that carbon flux rates are widely understood to be substrate controlled; however, characterizing substrate quality continues to be a challenge. We suggest that, while optical measurements have their place, they are not the only, or the best, tool for characterizing organic matter quality. Nominal oxidation state of the carbon provides a thermodynamically relevant measure, which could be used as a metric of organic matter quality. Lastly, calculating nominal oxidation state of the carbon requires a suite of advanced complementary analysis but is then trivial to calculate from the resulting data sets.},
doi = {10.1029/2018JG004525},
journal = {Journal of Geophysical Research. Biogeosciences},
number = 6,
volume = 123,
place = {United States},
year = {Wed May 30 00:00:00 EDT 2018},
month = {Wed May 30 00:00:00 EDT 2018}
}
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Cited by: 23 works
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Figures / Tables:
Figure 1: Regressions of average molecular weight (M.W.) based on FTICRMS (left panel) versus the optical proxy spectral slope and double bond equivalences (DBE minus O; right panel) versus the optical proxy SUVA254 for pore water samples collected from a Sphagnum-dominated bog and Carex-dominated fen site in Stordalen mire, Sweden,more »
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