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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Environmental fate & pathways

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Description of key information

Additional information

The following information is taken into account for any environmental exposure assessment:

Based on the the literature overview and the discussion above on BCF/BAF, the following bioaccumulation/bioconcentration factors have been derived and further used for Pb:    

- Aquatic compartment

Bioaccumulation/bioconcentration factors in freshwater: 1,553 L/kg (wet weight)

- Soil compartment

The biota-to-soil accumulation factor (BSAF) for earthworms in soil is dependent on the effective cation exchange capacity (eCEC) of the soil:

log BSAF (kgdw/kgdw) = -0.89 * log eCEC (cmolc/kg) +0.55

For comparison with the PNECoral for birds and mammals, this BSAF must be expressed on a fresh weight basis. The conversion of dry weight to fresh weight is based on an average dry matter of 16% in earthworms (Jager 1998):

BSAF (kgdw/kgdw) = 0.16 * BSAF (kgdw/kgdw)

A generic BSAF factor of 0.048 (fresh weight) is derived for a soil with a median eCEC of 16 cmolc/kg soil. Fresh-weight based BSAF values for a soil with an eCEC of 8 and 30 cmolc/kg soil, corresponding to the 10thand 90thpercentile of eCEC in European arable soils are 0.089 and 0.028, respectively.