The ability of sediment extractants to measure the bioavailability of metals to three marine invertebrates

The ability of two chemical extractants, EDTA and dilute hydrochloric acid, to measure bioavailable metals in contaminated estuarine sediments has been examined. Data for extractable zinc, lead and cadmium in a range of sediments has been compared with the metals accumulated by three marine inverteb...

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Bibliographic Details
Published in:Science of the total environment 1992-01, Vol.125, p.67-84
Main Authors: Weimin, Ying, Batley, G.E., Ahsanullah, M.
Format: Article
Language:English
Subjects:
Applied sciences
bioavailability
Exact sciences and technology
heavy metals
Marine
Pollution
Pollution sources. Measurement results
sediments
Soil and sediments pollution
speciation
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Summary:The ability of two chemical extractants, EDTA and dilute hydrochloric acid, to measure bioavailable metals in contaminated estuarine sediments has been examined. Data for extractable zinc, lead and cadmium in a range of sediments has been compared with the metals accumulated by three marine invertebrates, two deposit feeders, the gastropod Velacumantis australis, the club-shell Pyrazus ebeninus and a burrower, the polychaete worm Phyllodoce novaehollandiae. Both extractants were able to predict uptake of zinc, lead and cadmium by V. australis, and lead by P. novaehollandiae from sediments of similar chemical and physical characteristics. Using a range of field sediments, only lead bioavailability to P. ebeninus could be predicted by HCl and EDTA. The differing organic content of these sediments is a possible factor in limiting the ability of these extractants to estimate bioavailable metals in this case.
ISSN:0048-9697
1879-1026
DOI:10.1016/0048-9697(92)90383-4