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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Trace metal accumulation by algae in Sepetiba Bay, Brazil

1994; Elsevier BV; Volume: 83; Issue: 3 Linguagem: Inglês

10.1016/0269-7491(94)90157-0

ISSN

1873-6424

Autores

C. S. Karez, Valéria Freitas de Magalhães, W.C. Pfeiffer, Gilberto M. Amado Filho,

Tópico(s)

Environmental Toxicology and Ecotoxicology

Resumo

Trace metal concentrations (Zn, Cd, Pb, Cr and Cu) were determined in some benthic algae from Sepetiba Bay, Brazil. This region has been modified by the increase of industrial activities during the last 30 years. Among species sampled the brown algae Padina gymnospora contained the greatest amount of Zn. The Bioconcentration Factor for Zn in P. gymnospora was found to be 10(4) under laboratory conditions. The absorption of (65)Zn depended on exposure time and increased with Zn concentrations in the medium. An insignificant amount of Zn desorbed from algae suggested a very high affinity with cellular binding sites. Zinc uptake by P. gymnospora is discussed by considering field and laboratory conditions.

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