Title of article :
Molecular characterization of dissolved organic matter in freshwater wetlands of the Florida Everglades
Author/Authors :
Hanna، J. V. نويسنده , , Childers، D. L. نويسنده , , Lu، X. Q. نويسنده , , Maie، N. نويسنده , , Jaffe، R. نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-2598
From page :
2599
To page :
0
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.
Keywords :
pyrolysis-GC/MS , DOM , Freshwater marshes , humic substances , synchronous fluorescence , Solid state 13C CPMAS NMR
Journal title :
Water Research
Serial Year :
2003
Journal title :
Water Research
Record number :
84624
Link To Document :
بازگشت