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    Subjectsecotoxicologie (6)ecotoxicology (6)risks (6)bodem (4)gevaarlijke toffen (4)View MoreAuthors
    CSR (6)
    Posthumus R (6)
    Verbruggen EMJ (4)Slooff W (2)van Wezel AP (1)View MoreYear (Issue Date)
    2001 (6)
    TypesOnderzoeksrapport (3)

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    Thumbnail

    Implementation of QSAR's in ecotoxicological risk assessments

    Posthumus R; Slooff W (Rijksinstituut voor Volksgezondheid en Milieu RIVM, 2001-02-28)
    Quantitative Structure Activity Relationship (QSAR) modelling techniques are overviewed here, along with descriptors which can be used in QSAR equations and the different statistical methods suitable for deriving QSARs. Discussed is the current state of the art on the use of QSAR estimates within the different regulatory assessment frameworks of the Centre for Substances and Risk Assessment at the Dutch National Institute of Public Health and the Environment (RIVM/CSR). Special emphasis has been placed on environmental effect assesssments. Commonly accepted QSAR equations and software programs used in environmental exposure assessments are described. Generally accepted QSAR equations and other QSARs for environmental effects documented in the literature are presented in tabular form; compounds acting by non-polar narcosis, polar narcosis, reactive chemicals and chemicals with a specific mode of action are presented separately. Recently developed computerised QSAR programs are also overviewed. Several recommendations are made for the use of QSARs within RIVM/CSR risk/hazard assessment frameworks, with experiences related to routine application of QSARs in effect assessments to be evaluated and reported on within one year.
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    Ecotoxicological Serious Risk Concentrations for soil, sediment and (ground)water: updated proposals for first series of compounds

    Verbruggen EMJ; Posthumus R; Wezel AP van (Rijksinstituut voor Volksgezondheid en Milieu RIVM, 2001-08-01)
    The Intervention Value for soil and groundwater is based on the integration of a separately derived human toxicological Serious Risk Concentration or SRChuman as well as an ecotoxicological Serious Risk Concentration or SRCeco. This report presents proposals for updated SRCseco for the first series of compounds. For substances for which MPCs/NCs have been derived between 1990 and now, the same data are used to derive the SRCeco. Together with the derivation of the SRCeco, also a new MPC is derived, according the most recent guidelines as summarised in this report. The information in this report is used in the technical evaluation of Intervention Values for soil, sediment and groundwater, RIVM report 711701 023.
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    Ecotoxicological Serious Risk Concentrations for soil, sediment and (ground)water: updated proposals for first series of compounds. Annex

    Posthumus R; Verbruggen EMJ (Rijksinstituut voor Volksgezondheid en Milieu RIVM, 2001-08-01)
    This annex is supplementary to RIVM report 711701020, 'Ecotoxicological Serious Risk Concentrations for soil, sediment and (ground)water: updated proposals for first series of compounds' (E.M.J. Verbruggen, R. Posthumus and A.P. van Wezel). For the compounds considered in this report, which were not yet evaluated in the context of the project 'Setting Integrated Environmental Quality Standards', new toxicity data have been searched for. Further, additional toxicity data were collected for chlorophenols. These toxicity data are incorporated in this annex. The data are single species toxicity data for terrestrial and aquatic organisms and effect data on terrestrial processes. All toxicity data on aquatic and terrestrial organisms refer to effects that may affect the species at the population level.
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    Ecotoxicological Serious Risk Concentrations for soil, sediment and (ground)water: updated proposals for first series of compounds

    Verbruggen EMJ; Posthumus R; van Wezel AP (Rijksinstituut voor Volksgezondheid en Milieu RIVM, 2001-08-01)
    De Interventiewaarde voor bodem, sediment en grondwater is gebaseerd op een integratie van onafhankelijk afgeleide humaan toxicologische Ernstig Risico Concentraties of SRChuman en ecotoxicologische Ernstig Risico Concentraties of SRCeco. Dit rapport presenteert voorstellen voor herziene SRCeco voor de eerste serie stoffen. Voor stoffen, waarvoor MTRs/VRs zijn afgeleid tussen 1990 en nu, zijn dezelfde gegevens gebruikt om de SRCeco af te leiden. Samen met de afleiding van de SRCeco is ook een nieuwe MTR waarde afgeleid, in overeenstemming met de meest recente richtlijnen, zoals samengevat in dit rapport. De informatie in dit rapport wordt gebruikt in de technische evaluatie van de Interventiewaarden voorbodem, sediment en grondwater, RIVM rapport 711701 023.<br>
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    Ecotoxicological Serious Risk Concentrations for soil, sediment and (ground)water: updated proposals for first series of compounds. Annex

    Posthumus R; Verbruggen EMJ (Rijksinstituut voor Volksgezondheid en Milieu RIVM, 2001-08-01)
    This annex is supplementary to RIVM report 711701020, 'Ecotoxicological Serious Risk Concentrations for soil, sediment and (ground)water: updated proposals for first series of compounds' (E.M.J. Verbruggen, R. Posthumus and A.P. van Wezel). For the compounds considered in this report, which were not yet evaluated in the context of the project 'Setting Integrated Environmental Quality Standards', new toxicity data have been searched for. Further, additional toxicity data were collected for chlorophenols. These toxicity data are incorporated in this annex. The data are single species toxicity data for terrestrial and aquatic organisms and effect data on terrestrial processes. All toxicity data on aquatic and terrestrial organisms refer to effects that may affect the species at the population level.<br>
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    Implementation of QSAR&apos;s in ecotoxicological risk assessments

    Posthumus R; Slooff W (2001-02-28)
    Een overzicht is gegeven van modelleringstechnieken voor Kwalitatieve Stuctuur Activiteit Relaties (QSAR) evenals van descriptoren die kunnen worden gebruikt bij QSAR berekeningen en van verschillende statistische methoden, die geschikt worden geacht voor de afleiding van QSAR's. De huidige stand van zaken ten aanzien van het gebruik van QSAR's binnen de verschillende reguliere beoordelingskaders van het Centrum voor Stoffen en risicobeoordeling van het Nationaal Instituut voor Volksgezondheid en Milieu (RIVM/CSR) wordt toegelicht. De algemeen geaccepteerde QSAR berekeningen en software programma's voor de beoordeling van ecotoxicologische risico's via de blootstellingsroute zijn beschreven. De nadruk ligt echter op de beoordeling van ecotoxicologische effecten. Algemeen geaccepteerde QSAR's en andere in de openbare literatuur vastgelegde QSAR's voor de beoordeling van ecotoxicologische effecten worden in aparte tabellen gepresenteerd voor respectievelijk stoffen die werken via niet-polaire narcose, polaire narcose, reactieve stoffen en stoffen met een specifiek werkingsmechanisme. Ook wordt een overzicht gegeven van recentelijk ontwikkelde QSAR computer programma's. Enkele aanbevelingen worden gedaan op welke wijze QSAR's binnen de beoordelingskaders van RIVM/CSR kunnen worden toegepast. Ervaringen met routinematig toepassen van QSAR's bij de beoordelingen van ecotoxicologische effecten worden over een jaar geevalueerd en gerapporteerd.
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