PROCESSES Research Questions

1
ltPROCESSESgt Research Questions

• Total metal lt-gt bioavailable metal lt-gt
  bioaccumulation in environmental compartments -
  controlling factors?
• Metal binding in abiotic compartments - how does
  this influence metal mobility in watersheds?

2
ltPROCESSESgt Keywords

• bioavailability
• metal speciation
• metal mobility
• biotic lt-gt abiotic partitioning
• exposure

3
ltPROCESSESgt Linkages
4
ltPROCESSESgt Projects

• B1 soils, vegetation, base metals, field,
  speciation, partitioning coefficients
• B2 water, sediment, benthos, base metals,
  field, partitioning coefficients
• B3 soils, receiving waters, base metals,
  field, laboratory, partitioning coefficients

5
ltPROCESSESgt Linkages

• validation of lab complexation constants with
  field soil free-ion determinations
• validation of lab complexation constants for
  soils with mobility of metals in sediments
• commonalities of sediments and tree rings as
  historic records of metal deposition
• abioticbiotic partitioning coefficients for
  aquatic and terrestrial systems

6
ltPROCESSESgt Benefits of a Network

• large correlative data sets that would not be
  collected by one individual
• multi-users of same field sampling sites

7
ltPROCESSESgtBenefits to Policy

• improved exposure characterizations for
  terrestrial and aquatic boreal biota
• biologically validated bases for soil, water and
  sediment quality criteria