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Anais da Academia Brasileira de Ciências

Print version ISSN 0001-3765On-line version ISSN 1678-2690

An. Acad. Bras. Ciênc. vol.73 no.3 Rio de Janeiro Sept. 2001

http://dx.doi.org/10.1590/S0001-37652001000300016 

HEAVY METALS OF THE ANTA STREAM S. J. RIO PRETO - SP

SILVIA C. NASCIMENTO AND RAPHAEL HYPOLITO

Instituto de Geociências, USP, São Paulo, SP.

Presented by ANTONIO C. ROCHA-CAMPOS

 

Diverse anthropic activities have produced meaningful quantities of residues, in which metallic elements can be found with differential forms of retention and mobility with the environment. Therefore, it is of great importance that their fixation and mobilization be studied in different environmental settings.

This study attempt to quantify metal ion pollutants from a variety of sources and their dispersion in soils, sediments, surface waters, and groundwater. Risks upon fish will also be evaluated, as fish have several physiological systems similar to those in homeothermic animals and commonly make up part of the human food chain. Such ions will be used as biomonitors, in order to establish co-relationship among the following systems: polluted environments, fish and aquatic plants.

The study site comprehends a portion of the Anta Stream northeast of São José do Rio Preto, São Paulo, which drains into the Rio Preto within the Turvo/Grande watershed. At the study site there occur several recent urban nuclei, a sanitary landfill (Construfert) with compost facility provided with capture and treatment of leachates, and a bone flour and tallow factory (Sebo-Sol).

The behavior of such ions with the biota will be determined by monitoring their harmful effects on the environment through biomonitors, systematic collection of water, and sequential extractions of soils, sediments, etc. — ( December 8, 2000 )

 

* E-mail: scremo@usp.br

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