Humic substances from sediments of Lobos Pond (Argentina). Isolation, characterization and limnological implications
Título del documento: Humic substances from sediments of Lobos Pond (Argentina). Isolation, characterization and limnological implications
Revue: Ecletica quimica
Base de datos:
Número de sistema: 000552804
ISSN: 0100-4670
Autores: 3
4
1
2
Instituciones: 1Museo de Ciencias Naturales, Laboratorio de Investigación de Sistemas Ecológicos y Ambientales, Buenos Aires, Argentina.,
2Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Buenos Aires, Argentina.,
3Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Buenos Aires, Argentina. Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina.,
4Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina.,
Año:
Volumen: 36
Número: 2
Paginación: 128-141
País: Brasil
Idioma: Inglés
Resumen en inglés 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.
Keyword: humic substances,
isolation,
sediment,
pampasic ponds,
Argentina
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