Abstract: Molecular Level of Dissolved Organic N Transformation in Runoff Water from Agriculture Land in Indian River Watershed. (ASA, CSSA and SSSA International Annual Meetings (2016))

370-1 Molecular Level of Dissolved Organic N Transformation in Runoff Water from Agriculture Land in Indian River Watershed.

See more from this Division: SSSA Division: Soils and Environmental Quality
See more from this Session: Soils and Environmental Quality Oral II

Wednesday, November 9, 2016: 8:05 AM

Phoenix Convention Center North, Room 126C

Li Liguang, University of Florida, IFAS, Indian River Research and Education Center, Fort Pierce, FL, Zhenli He, University of Florida Indian River Research & Education Center, Fort Pierce, FL, Malak Tfaily, Environmental and Molecular Sciences Laboratory, Pacific Northwest National Labs, Richland, WA, Patrick W. Inglett, University of Florida, University of Florida, Gainesville, FL and Peter J. Stoffella, Indian River Research and Education Center, Soil and Water Science Department-University of Florida, Fort Pierce, FL

Abstract:

Molecular level of dissolved organic N transformation in runoff water from agriculture land in Indian River Watershed Abstract: Dissolved organic nitrogen (DON), also contribute to eutrophication. We used Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) to identify molecular composition of DON in the agriculture storm runoff water from citrus grove, pasture and canal C-24 from February, 2014 to November 2014. The correlations between DON molecules and water environment and inorganic N varied with DON species. Transformation processes of DON at the molecular level will improve our understanding of DON speciation and dynamic change in storm runoff water from agricultural fields to IRL and help to develop best management practices and reduce N loading in IRL area. Key words: Mass spectrometry, Estuarine chemistry, Spatial variations, Temporal variations, Management

See more from this Division: SSSA Division: Soils and Environmental Quality
See more from this Session: Soils and Environmental Quality Oral II

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