Added risk approach to derive maximum permissible concentrations for heavy metals: how to take natural background levels into account.

@article{Struijs1997AddedRA,
  title={Added risk approach to derive maximum permissible concentrations for heavy metals: how to take natural background levels into account.},
  author={Jeroen N. Struijs and Dik van de Meent and Willie J G M Peijnenburg and Marc A G T van den Hoop and Trudie Crommentuijn},
  journal={Ecotoxicology and environmental safety},
  year={1997},
  volume={37 2},
  pages={112-8}
}
A unified method is presented to derive maximum permissible concentrations (MPCs) of xenobiotic and naturally occurring substances. The method relies upon risk limitation expressed as the maximum potentially affected fraction of all possible species (PAFmax) in a component ecosystem, due to a bioavailable concentration of the considered substance. For xenobiotic compounds the method is simplified to the "HC5 approach," i.e., the MPC equals the hazardous concentration at which 5% of the species… CONTINUE READING