Prediction of the long term accumulation and leaching of zinc in Dutch agricultural soils: a risk assessment study

A dynamic model was used to predict future soil Zn concentrations at ongoing present Zn inputs until steady state is reached (Predicted Effect Concentrations at steady state or PEC steady state) in comparison to the Predicted No Effect Concentration (PNEC) of Zn. The main aim of this report is to evaluate whether the current load of zinc to soils in different forms of land use (arable land, pasture) and soil types leads to an exceedance of the PNECs, and if so at what time scale. Results show that at present there is hardly any exceedance of the PNEC of zinc in the Netherlands. The percentage... Mehr ...