Determination of trace metal concentrations in a flooded tropical lake during a complete hydrological cycle

The concentrations of the Al, Co, Cr, Cu, Pb, Sn, Ni, and Zn trace metals were monitored in Lake Ipe (Brazil) during two hydrological sub-periods: June-December 1999 (low water period, LW), and January-April 2000 (high water period, HW). A detailed study of the physical and chemical state of the met...

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Bibliographic Details
Published in:Annales de limnologie 2005-01, Vol.41 (1), p.47-55
Main Authors: BARRETO, W. J, RECHE RIBEIRO, M, SCARMINIO, I. S, SOLCI, M. C, NOZAKI, J, DE OLIVEIRA, E, GIANCOLI BARRETO, S. R
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
Synecology
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Summary:The concentrations of the Al, Co, Cr, Cu, Pb, Sn, Ni, and Zn trace metals were monitored in Lake Ipe (Brazil) during two hydrological sub-periods: June-December 1999 (low water period, LW), and January-April 2000 (high water period, HW). A detailed study of the physical and chemical state of the metals was performed through the MINTEQA2 computer program using 15 abiotic parameters. An increase in concentration of many trace metals in July 1999 was due to the sudden entry of allochthonous matter. The seasonal study showed that the metal concentrations in the lake were governed by the hydrological regime of the Parana River (HW), and by the occurrence of occasional flood pulses and rainfall (LW).
ISSN:0003-4088
2100-000X
DOI:10.1051/limn/2005005