B41H:
Trials and Tribulations of Fluorescent Dissolved Organic Matter Chemical Interpretations: Converging Fluorescent Community Challenges Posters

Submit an Abstract to this Session



Session ID#: 24003

Session Description:
Understanding dissolved organic matter (DOM) chemistry has been a crucial focus of carbon cycling research in aerosol, aquatic, and terrestrial environments for decades. DOM is a critical currency for material and energy exchange among all systems, as well as an indicator of processes governing transformation through connected networks. Fluorescent DOM characterization by EEMs and subsequent interpretation by different quantitative methods, such as PARAFAC analyses, continues to be widely applied to identify underlying DOM chemistry. While the vast application of EEMs continues to grow, so do the challenges with interpretation. Oversimplification and overstatement of fluorescent DOM studies are common discrepancies, thus disputes over interpretations need to be resolved. We welcome fluorescent DOM studies from all environments, integrating results with other chemical analyses techniques, and also across multiple disciplines. Unifying fluorescent DOM communication by discussing diverse research, challenges, and interpretations are necessary, and will promote a clearer chemical understanding of Earth systems.
Primary Convener:  Juliana D'Andrilli, Montana State University, Land Resources and Environmental Sciences, Bozeman, MT, United States
Convener:  Fernando Rosario-Ortiz, University of Colorado at Boulder, Civil, Environmental, and Architectural Engineering, Boulder, CO, United States
Chairs:  Fernando Rosario-Ortiz, University of Colorado at Boulder, Civil, Environmental, and Architectural Engineering, Boulder, CO, United States and Juliana D'Andrilli, Montana State University, Land Resources and Environmental Sciences, Bozeman, MT, United States
OSPA Liaison:  Juliana D'Andrilli, Montana State University, Land Resources and Environmental Sciences, Bozeman, MT, United States

Cross-Listed:
  • A - Atmospheric Sciences
  • C - Cryosphere
  • H - Hydrology
  • OS - Ocean Sciences
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
1050 Marine geochemistry [GEOCHEMISTRY]
1055 Organic and biogenic geochemistry [GEOCHEMISTRY]
1806 Chemistry of fresh water [HYDROLOGY]

Abstracts Submitted to this Session:

Limitations of fluorescence spectroscopy to characterize organic matter in engineered systems (Invited) (265538)
Julie Korak, Bureau of Reclamation, Technical Service Center, Denver, CO, United States
The Case Against Charge Transfer Interactions in Dissolved Organic Matter Optical Properties (237090)
Garrett McKay1, Julie Korak2,3, Paul R Erickson4, Douglas E Latch5, Kristopher McNeill4 and Fernando Rosario-Ortiz3, (1)University of Colorado at Boulder, Civil, Environmental and Architectural Engineering, Boulder, CO, United States, (2)Bureau of Reclamation, Technical Service Center, Denver, CO, United States, (3)University of Colorado at Boulder, Civil, Environmental, and Architectural Engineering, Boulder, CO, United States, (4)ETH Zurich, Zurich, Switzerland, (5)Seattle University, Seattle, United States
Investigating Marine Dissolved Organic Matter Fluorescence Transformations with Organic Geochemical Proxies in a Growth and Degradation Experiment using Amino Acids, Amino Sugars, and Phenols (251967)
Michael R Shields, University of Florida, Department of Geological Sciences, Gainesville, FL, United States, Thomas S S Bianchi, University of Florida, Department of Geological Sciences, Gainesville, United States, Chris L Osburn, North Carolina State University Raleigh, Raleigh, NC, United States, Joanna D Kinsey, North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, NC, United States, Kai Ziervogel, University of New Hampshire, Ocean Process Analysis Laboratory, Durham, United States and Astrid Schnetzer, North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, United States
Trials and Tribulations of Fluorescent Dissolved Organic Matter Chemical Interpretations: A case study of polar ice cores (288070)
Juliana D'Andrilli, Montana State University, Land Resources and Environmental Sciences, Bozeman, MT, United States
New Approaches in Soil Organic Matter Fluorescence; A Solid Phase Fluorescence Approach (252482)
Maggie Mae Bowman, University of Colorado, Boulder, CO, United States, Michael R Sanclements, NEON, Boulder, CO, United States and Diane M McKnight, University of Colorado Boulder, Civil, Environmental, and Architectural Engineering, Boulder, United States
Illuminating the dark side of DOM: A bottom up approach to understanding the structure and composition of DOM. (274983)
Phoebe Zito1, Matthew A Tarr1, Robert G Spencer2 and David C Podgorski1, (1)University of New Orleans, Department of Chemistry, New Orleans, LA, United States, (2)Florida State University, Earth, Ocean and Atmospheric Sciences, Tallahassee, FL, United States
WATSON: Detecting organic material in subsurface ice using deep-UV fluorescence and Raman spectroscopy (278999)
Evan Eshelman1, Greg Wanger2, Ken Manatt3, Michael Malaska4, Madelyne Willis5, William Abbey6, Ivria Doloboff2, Luther W Beegle7, Lauren P DeFlores8, John C Priscu9, Arthur L Lane10, Brandi L Carrier8, Bolek Mellerowicz11, Daniel Kim11, Gale Paulsen11, Kris Zacny12 and Rohit Bhartia6, (1)York University, Centre for Research in Earth and Space Science, Toronto, ON, Canada, (2)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (3)K2 Technical Services, Tujunga, CA, United States, (4)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (5)Montana State University, Bozeman, United States, (6)JPL/NASA/Caltech, Pasadena, CA, United States, (7)Melanie Sauer & Associates LLC, Sierra Madre, United States, (8)Jet Propulsion Laboratory, Pasadena, CA, United States, (9)Desert Research Institute, Division of Earth and Ecosystem Sciences, Reno, United States, (10)JPL, Pasadena, United States, (11)Honeybee Robotics Pasadena, Pasadena, CA, United States, (12)Honeybee Robotics-Blue Origin, Altadena, United States
Electron Shuttling by Dissolved Humic Substances: Using Fluorescence Spectroscopy to Move Beyond the Laboratory to Natural Lakes, Streams and Groundwaters (298813)
Diane M McKnight, Program for Arctic Systems Sciences, National Science Foundation, Washington DC, DC, United States

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