Trace metal accumulation by algae in Sepetiba Bay, Brazil

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 o...

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Veröffentlicht in:	Environmental pollution (1987) 1994, Vol.83 (3), p.351-356
Hauptverfasser:	Karez, C.S., Magalhaes, V.F., Pfeiffer, W.C., Amado Filho, G.M.
Format:	Artikel
Sprache:	eng
Schlagworte:	absorption Applied sciences binding bioaccumulation bioindicator brown algae cadmium cell structures Chlorophycota chromium concentration copper duration environmental exposure Exact sciences and technology heavy metals indicator species ion transport lead Marine marine pollution metal accumulation Natural water pollution Padina gymnospora Phaeophycophyta Phaeophyta pollutants Pollution Rhodophycota Rhodophyta Seawaters, estuaries species differences water pollution Water treatment and pollution zinc
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Zusammenfassung:	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 65Zn 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.
ISSN:	0269-7491 1873-6424
DOI:	10.1016/0269-7491(94)90157-0