Title
Distribution of heavy metals in dissolved, particulate and biota in the Scheldt estuary, Belgium Distribution of heavy metals in dissolved, particulate and biota in the Scheldt estuary, Belgium
Author
Publication type
article
Publication
New York, N.Y. ,
Subject
Chemistry
Biology
Source (journal)
Chemistry and ecology. - New York, N.Y.
Volume/pages
24(2008) :1 , p. 61-74
ISSN
0275-7540
ISI
000253335500006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The distribution of heavy metals in abiotic phases (dissolved, particulate) and biotic fauna (i.e. Mytilus edulis), were analysed and studied in the Scheldt estuary, with the aim of determining the distribution of heavy metal pollution, at seven sites. For the analysed metals, the concentrations in M. edulis tissues were in the order: Fe > Zn > Cu > Pb > Cd > Co. Cadmium concentrations were the lowest for all sites, except at Borsele and Hansweert. The metals in mussel tissues correlated well with metals in both the particulate (e.g. Cd, r = 0.98) and dissolved phases (e.g. Cd, r = 0.57; Cr, Zn, r = 0.79; Fe, r = 0.58). Furthermore, a relationship between heavy metal concentrations in the abiotic phases and the soft tissue of M. edulis was developed, with an effort to determine how much pollution apportionment each abiotic phase contributed to metal accumulation in the soft tissues. Results showed that the contribution from the dissolved phase was more significant compared to the particulate phase. The bioaccumulated heavy metals (e.g. Cd, Cu, Zn) in the tissues were way above the acceptable limits stipulated by international codes of practice, implying critical estuary pollution in the biota.
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