Aim
The overall aim of IBRACS has been to provide policymakers, other authorities and service providers with guidelines on how chemical bioavailability tests and results of bioavailability-based risk assessment models can be used for risk-based management decisions on contaminated land.
The specific objectives were:
- To review existing risk assessment models for soils in Sweden, Belgium (Flanders, Wallonia) and the Netherlands with focus on bioavailablity.
- To evaluate the ability of so-called passive samplers and established soil extracts to predict toxic responses of plants to exposures of metals (Cu, Ni, Zn) and organic contaminants (polycyclic aromatic hydrocarbons, PAHs).
- To evaluate plant uptake models and soil tests for PAH and how to incorporate them into risk assessment models.
- To make a cost-benefit analysis of including bioavailability tests in site specific risk assessment.
- To give recommendations on how to integrate chemical bioavailability tests in risk assessment frameworks (Cu, Zn, Ni and PAH).