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dc.contributor.authorKamerman JW
dc.contributor.authorGestel CAM van
dc.date.accessioned2012-12-12T17:25:16Z
dc.date.available2012-12-12T17:25:16Z
dc.date.issued1991-07-31
dc.identifier216402003
dc.identifier.urihttp://hdl.handle.net/10029/258682
dc.description.abstractAbstract niet beschikbaar
dc.description.abstractIn this report a description is given of the (further) development of bioassays for estimating the bioavailability of metals in soils using earthworms (Eisenia fetida), lettuce (Lacuca sativa) and Radish (Raphanus sativus). The bioassays can be used in unpolluted, contaminated and cleaned-up soils. In former research soils cleaned-up by extraction appeared to have lost structure and nutrients so that earthworms died and plants didn't grow. A standard additive was developed which enables the performance of the bioassays in both contaminated and cleaned-up soils without, influencing the bioavailability of the metals. Therefore several additives (peat, clay, sand, perlite, cow-dung and nutrient solution) in varying quantities were tested in some contaminated and cleaned-up soils. The influence of the additives on the survival of worms and the growth of radish and lettuce were established. The bioassays lasted 4 weeks. A suited standard additive for the bioassay using earthworms appeared to be: 8 vol% perlite ; 1 g cow-dung/ worm ; nutrient solution. The developed standard additive for the bioassays using radish or lettuce consists of: 8 vol% perlite ; nutrient solution. The standard additives were tested in contaminated and cleaned-up soils and appeared to enable survival of the earthworms and proper growth of radish and lettuce. The additives did not influence the bioavailability of the metals in these soils.
dc.description.sponsorshipSpeerpuntprogramma Bodemonderzoek
dc.format.extent54 p
dc.language.isonl
dc.relation.ispartofRIVM Rapport 216402003
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/216402003.html
dc.subject13nl
dc.subject91-3nl
dc.subjectmetalennl
dc.subjectregenwormennl
dc.subjectkropslanl
dc.subjectradijsnl
dc.subjectbiologisch beschikbaarheidnl
dc.subjectmetalsnl
dc.subjectearthwormsnl
dc.subjectlettucenl
dc.subjectradish; bioavailability.nl
dc.titleBeoordeling van gereinigde grond. III. De ontwikkeling van bioassaysnl
dc.title.alternativeEvaluation of cleaned-up soils. III. Development of bioassaysen
dc.typeReport
dc.date.updated2012-12-12T17:25:16Z
html.description.abstractAbstract niet beschikbaar
html.description.abstractIn this report a description is given of the (further) development of bioassays for estimating the bioavailability of metals in soils using earthworms (Eisenia fetida), lettuce (Lacuca sativa) and Radish (Raphanus sativus). The bioassays can be used in unpolluted, contaminated and cleaned-up soils. In former research soils cleaned-up by extraction appeared to have lost structure and nutrients so that earthworms died and plants didn't grow. A standard additive was developed which enables the performance of the bioassays in both contaminated and cleaned-up soils without, influencing the bioavailability of the metals. Therefore several additives (peat, clay, sand, perlite, cow-dung and nutrient solution) in varying quantities were tested in some contaminated and cleaned-up soils. The influence of the additives on the survival of worms and the growth of radish and lettuce were established. The bioassays lasted 4 weeks. A suited standard additive for the bioassay using earthworms appeared to be: 8 vol% perlite ; 1 g cow-dung/ worm ; nutrient solution. The developed standard additive for the bioassays using radish or lettuce consists of: 8 vol% perlite ; nutrient solution. The standard additives were tested in contaminated and cleaned-up soils and appeared to enable survival of the earthworms and proper growth of radish and lettuce. The additives did not influence the bioavailability of the metals in these soils.


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