The spreadsheet calculates site specific ecological risk of metals in soils, based on their predicted No-Effect Concentrations (PNEC) to soil organisms.
If the Predicted Environmental Concentration (PEC) is known, this program also calculates the Risk Characterisation Ratio (RCR = PEC/PNEC) and the Potentially Affected Fraction (PAF) of terrestrial organisms at a given PEC.
For all metals, both the total and added (= background corrected) approach are presented, except for Cd where only a total PNEC could be calculated.
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