Humic substances from sediments of Lobos Pond (Argentina). Isolation, characterization and limnological implications

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Published: Dec 28, 2012
DOI: https://doi.org/10.26850/1678-4618eqj.v36.2.2011.p128-141
Keywords:
humic substances, isolation, sediment, pampasic ponds, Argentina

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Roberto Gustavo Choconi
Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Buenos Aires, Argentina. Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina.
Alberto Antonio Ghini
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina.
Victor Hugo Conzonno
Museo de Ciencias Naturales, Laboratorio de Investigación de Sistemas Ecológicos y Ambientales, Buenos Aires, Argentina.
Alicia Fernández Cirelli
Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Buenos Aires, Argentina.

Abstract

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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How to Cite
Choconi, R. G., Ghini, A. A., Conzonno, V. H., & Cirelli, A. F. (2012). Humic substances from sediments of Lobos Pond (Argentina). Isolation, characterization and limnological implications. Eclética Química, 36(2), 128–141. https://doi.org/10.26850/1678-4618eqj.v36.2.2011.p128-141
Issue
Vol. 36 No. 2 (2011): Eclética Química
Section
Original articles
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