Cu and Fe associated with humic acids in sediments of a tropical coastal lagoon

The amount of Cu and Fe associated with humic acids was estimated in five sediment cores from a tropical coastal lagoon (Piratininga Lagoon, Rio de Janeiro, Brazil). Core samples were analysed for humic acid contents, total Fe and Cu content. Fe and Cu associated with humic acids were also measured....

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Veröffentlicht in:	Organic geochemistry 1998-01, Vol.28 (12), p.813-822
Hauptverfasser:	Wasserman, Julio Cesar, Oliveira, Fernanda B.L, Bidarra, Mônica
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry binding processes Chemical Sciences coastal lagoon Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Geochemistry humic acids Piratininga, Brazil Pollution, environment geology sediments Soil and rock geochemistry tropical environment
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Zusammenfassung:	The amount of Cu and Fe associated with humic acids was estimated in five sediment cores from a tropical coastal lagoon (Piratininga Lagoon, Rio de Janeiro, Brazil). Core samples were analysed for humic acid contents, total Fe and Cu content. Fe and Cu associated with humic acids were also measured. Results show amounts of humic acids ranging from 0.7 to 21.7% of the dry weight of sediment (average 4.6%, standard deviation 4.4%). Concentrations of Fe and Cu ranged from 0.3 to 6.0% (average 2.2%, S.D. 1.2%) and from
ISSN:	0146-6380 1873-5290
DOI:	10.1016/S0146-6380(98)00044-8