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Sediment toxicity testing of lightly contaminated dredged
material in The Netherlands
J. M. Lourens1,
A. P. M. A. Vonck1, C. vd
Guchte2, J. Hartnack2
& J. Stronkhorst1
1National Institute for
Coastal and Marine Management/RIKZ, PC.
Box 20907,2500 EX The Hague, The Netherlands
2lnstitute for Inland Water
Management and Waste Water Treatment,
P.O. Box 17,8200 AA, Lelystad, The Netherlands
Received 21 November 1994; accepted in revised
form 22 September 1995
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Abstract
In the Netherlands, the decision to permit the dumping
of dredged material into the sea depends on the concentrations of
about 33 chemical compounds (Anonymous, l994a). This evaluation
of dredged material quality can be improved by the use of bioassays
in its assessment. In this note the use of bioassays in the evaluation
of lightly contaminated marine dredged material from the Netherlands
is illustrated with preliminary results of bioassays with Corophium
volutator and Crassostrea gigas. It is concluded that
contaminated sediment is useful.
Keywords: dredged material, quality assessment, bioassay,
guidelines, harbours
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