, Volume 1, Issue 2, pp 105-110

The newly proposed EU risk assessment concept for the sediment compartment

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Within the frame of the EU Existing Chemicals Regulation (793/93/EEC), a new concept for the assessment of the sediment compartment has been developed. During the assessment process it has become clear that for substances that strongly adsorb or bind to sediment the equilibrium partitioning method (EPM) presently employed is not sufficient. The new approach is therefore based on long-term sediment tests with benthic organisms. A testing strategy has been developed which considers species which represent different habitats and feeding strategies in order to adequately address all possible routes of exposure. The new concept has proven to be valuable in risk assessments, two examples (3,4-DCA, DODMAC) of which are shown in more detail.