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Endocrine disruptors in the Scheldt estuary: distribution exposure and effects
Monteyne, E.M.; Janssen, C.R.; Roose, P. (2007). Endocrine disruptors in the Scheldt estuary: distribution exposure and effects, in: Mees, J. et al. (Ed.) VLIZ Young Scientists' Day, Brugge, Belgium 2 March 2007: book of abstracts. VLIZ Special Publication, 39: pp. 44
In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, meer

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Documenttype: Samenvatting

    Pollution > Water pollution
    Properties > Biological properties > Tolerance > Exposure tolerance
    Secretory products > Hormones
    Toxicology > Ecotoxicology
    ANE, Nederland, Westerschelde [Marine Regions]

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    The Scheldt Estuary is known as one of the more polluted estuaries in Europe (OSPAR, 2000). The major compartments of the estuary, i.e. water, suspended solids, sediments and biota, are all affected by common POPs (persistent organic pollutants). In the framework of the ENDIS-RISKS project these compartments were frequently sampled during the last four years and analysed for these POPs indicated as possible endocrine disruptors. As such, the concentration levels of 22 different polycyclic aromatic hydrocarbons (PAHs), 18 polybrominated diphenylethers (PBDEs), 5 organochlorine pesticides (OCPs), 16 polychlorinated biphenyls (PCBs) and 6 organotin compounds e.g. TBT were determined by the MUMM laboratory. Their distribution (speciation within different compartments), concentration and geographic distribution are assessed. For the biota compartment, mysids were selected as an indicator organism for this particular ecosystem. In these invertebrates, the highest levels ever found for TBT were noted, with concentrations of up to 2500µ on a dry weight basis (or approx. 100µ on a wet weight basis). In the same species, SPCB7 levels varying from 200 to 1400 µ on dry weight were noted. OCPs and PAHs concentrations varied from 5 to 100µ The geographic distribution - along the salinity gradient of the Scheldt Estuary - of the body burdens of these compounds in mysids are discussed. Finally, the observations were compared to internationally accepted ‘Ecotoxicological Assessment Criteria’ used to assess the potential adverse effects on the ecosystem.

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