From sediments to soils: changes in pore water metal bioavailability

Abstract The use of sediments as soils is an area interest for Beneficial Use dredged sediments. In this study the impact transition from to researched by looking at seasonal and long year (10 year) change in pore water metal chemistry which are considered clean (class A) according Dutch soil directive. This based on a combination geohydrological, geochemical ecotoxicological risk models validated against measured concentrations metals over dry/wet period. compared standards expressed Risk Characterization Ratio’s (RCR) values. RCR values high (> 1) during first 3 years after application soil, especially end summer. multi substances Potentially Affected Fraction (ms-PAF) shows similar trend values, although it takes 5 before combined calculated potential ecotoxicity below legal 40% threshold level. Translated land use, advised restrict farming where these applied five-year Article Highlights should take into account different conditions when used soils. lead predicable multiple water. predicted results translated advice temporal use.