Humic Substances from sediments of Lobos Pond (Argentina). Isolation, Characterization and Limnological Implications

Humic substances (HS) were isolated from the sediments of Lobos Pond (Argentina) using mild conditions to preserve their native structure. The HS (humic and fulvic acids) were characterized by means of elemental analysis and FTIR spectroscopy. Also a by-product obtained during fulvic acids (FA) frac...

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Detalles Bibliográficos
Autores principales: Choconi, Roberto G., Ghini, Alberto A., Conzonno, Víctor H., Fernández Cirelli, Alicia
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Ciencias Naturales
Argentina
Humic substances
Isolation
Pampasic ponds
Sediment
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84661
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:Humic substances (HS) were isolated from the sediments of Lobos Pond (Argentina) using mild conditions to preserve their native structure. The HS (humic and fulvic acids) were characterized by means of elemental analysis and FTIR spectroscopy. Also a by-product obtained during fulvic acids (FA) fractionation (an amorphous white solid residue) was analyzed. Results revealed possible interactions between FA and inorganic-organic substances that may have implications referring to bioavailability. Other limnological implications, such as autochtonous origin of HS linked with the hydrology, and change of pH during stormy weather that affects HS interactions, are discussed.

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