Challenges to implementing bioavailable ...

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Sep 5, 2017 - Validation ranges for BioMet v 1.4 and exceedence percentages in Nordic countries. pH. SWE NOR FIN Ca mg/l SWE NOR FIN. Cu. 6.0-8,5 9.
Challenges to implementing bioavailable environmental quality standards for metals in Northern Europe

Leppänen Matti T., Garmo Øyvind A., Hoppe Sabina, Merrington Graham, Ndungu Kuria and Peters Adam SETAC Europe, 9.5.2017

WFD; Protecting environment ● Environmental Quality Standards (EQS) in EU WFD ○ Only few metals (Ni, Cd, Pb, Hg) ● Bioavailable EQS introduced (2013/39/EC) ○ Ni and Pb ● A need to estimate bioavailable concentrations ○ Direct measurement ○ Modelling based on physicochemical parameters of water

Modelling Biotic Ligand Models; BLM ● Good mechanistic understanding of speciation and toxicity ○ Scientifically proved ○ Use in many jurisdictions ● Simple models available ○ Require only few parameters (Ca, pH, DOC..) ○ Do have validation ranges for water quality

DOC in the stream waters of Europe Red = > 15 mg/L

pH in the stream waters of Europe Red =

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