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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Bibliographic Details
Published in:Environmental pollution (1987) 1994, Vol.83 (3), p.351-356
Main Authors: Karez, C.S., Magalhaes, V.F., Pfeiffer, W.C., Amado Filho, G.M.
Format: Article
Language:English
Subjects:
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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Summary: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