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(W/EH013) Comparisons of soil and sediment ecotoxicity data and test methods. Herrchen, Monika1, Fiedler, Sabine2, Gildemeister, Thomas2, Hund-Rinke, Kerstin1, Metag, Nicole1,2, Nagel, Roland2, 1 2 ABSTRACT- The quality, validity, representiveness and size of data collections of existing ecotoxicity data for chemicals varies to a high extend between the environmental compartments water, sediment and soil. In order to reduce the imbalance of existing data and to be able to proceed with profound and comprehensive risk analyses and evaluation procedures for all environmental compartments a tiered and comprehensive approach will be developed in a recently started project sponsored by CEFIC-LRI. The main emphasis will be laid on organic chemicals which persist and bioaccumulate (approximately 10 chemicals, e.g. Benzo-(a)-pyrene, DDT, PCP), however, one example of a metal compound also will be selected. The approach will comprise both, an experimental filling of gaps in ecotoxicity data and test methods and a theoretical part of establishing correlations, extrapolation and normalization methodologies. Following results are expected: correlations for a "normalization" allowing for comparable, homogeneous PNEC-derivation; -final correlations to extrapolate from aquatic to terrestrial and sediment data; -expert system for scope and limitations of extrapolation. For the establishment of validated correlations identified gaps in terrestrial and sediment ecotoxicity testing need to be filled experimentally. An at least nationally agreed test battery will be used for soil and sediment testing. We thank CEFIC-LRI for sponsoring this project. Key words: aquatic, sediment and soil data and test methods, organic chemicals and metal compound, correlation, extrapolation |
