Hi,
I was wondering if anyone had sourced suitable numeric soil-plant
concentration factors for contaminants for which the Briggs model in CLEA
UK is not suitable. Particularly heavier PAH (including BaP).
I was forwarded the references at the end of this e-mail by the EA, and of
the papers I was able to access, the most conservative soil-plant
concentration factor for both leafy and root vegetables was 0.02 (dry
weight) for PAH.
When I used this in the CLEA UK model for BaP along with generic soil
properties, an assessment criteria of 0.99mg/kg was generated.
Does anyone know of more recent research into soil-plant concentration
factors, and would you consider these papers as suitably authoritative in
order to override the Briggs model in risk assessment?
Thanks
Esther MacRae
Scientific Officer
Highland Council
Fismes J, Perrin-Ganier C, Empereur-Bissonet P and Morel JL (2002) Soil-to-
root transfer and translocation of polycyclic aromatic hydrocarbons by
vegetables grown on industrial contaminated soils.
Journal of Environmental Quality 31(5): 1649 - 1656
Bernillon P. et al. (2003) Soil to Crop Transfer of PAHs: Evaluation of
the HESP Multimedia Exposure Model by Comparing its Predictions to
Measured Concentrations in vegetables Grown on Soils from a Former
Manufactured Gas Plant (MGP). Presented at CONSOIL 2003, Ghent Belgium.
Samsoe-Petersen L, Larsen EH, Larsen PB and Bruun P (2002) Uptake of Trace
Elements and PAHs by Fruit and Vegetables from Contaminated Soils.
Environmental Science & Technology 36: 3057 - 3063
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