Molecular characterization of dissolved organic matter in freshwater wetlands of the Florida Everglades

X. Q. Lu, N. Maie, J. V. Hanna, D. L. Childers, R. Jaffé

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

Abstract

In this study, the molecular composition of dissolved organic matter (DOM), collected from wetlands of the Southern Everglades, was examined using a variety of analytical techniques in order to characterize its sources and transformation in the environment. The methods applied for the characterization of DOM included fluorescence spectroscopy, solid state 13C CPMAS NMR spectroscopy, and pyrolysis-GC/MS. The relative abundance of protein-like components and carbohydrates increased from the canal site to more remote freshwater marsh sites suggesting that significant amounts of non-humic DOM are autochthonously produced within the freshwater marshes, and are not exclusively introduced through canal inputs. Such in situ DOM production is important when considering how DOM from canals is processed and transported to downstream estuaries of Florida Bay.

Original languageEnglish (US)
Pages (from-to)2599-2606
Number of pages8
JournalWater Research
Volume37
Issue number11
DOIs
StatePublished - Jun 2003
Externally publishedYes

Keywords

  • DOM
  • Freshwater marshes
  • Humic substances
  • Pyrolysis-GC/MS
  • Solid state C CPMAS NMR
  • Synchronous fluorescence

ASJC Scopus subject areas

  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

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