POSSM-S (ParsimOniouS Speciation of Metals in soils) Model

POSSMs (ParsimOniouS Speciation of Metals in soils) is a simple model of the equilbrium speciation of nickel, copper, zinc, cadmium and lead in soils. In contrast to mechanistic speciation models, which predict concentrations and activities of multiple metal species, POSSMs predict concentrations only of the free metal ion, the metal complexed in the soil water, and the metal adsorbed to the soil solids. POSSMs also predicts the partition coefficient (Kd) of metal between adsorbed forms and the metal dissolved in the soil water.

POSSMs is described in detail in an associated publication (Lofts, S., POSSMs: A parsimonious speciation model for metals in soils. Environmental Chemistry, accepted). The model is available at no cost, under the terms of the Open Government Licence, by emailing LAPollutionSupport@ceh.ac.uk.

This work was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability.
Other contacts
Point Of Contact
Stephen Lofts
UK Centre for Ecology & Hydrology
Maclean Building, Benson Lane, Crowmarsh Gifford
OX10 8BB

Model Description

QA Information

Developer testing
done? Unknown
Internal peer review
done? Unknown
External peer review
done? Unknown
Internal model audit
done? Unknown
External model audit
done? Unknown
Quality assurance guidelines and checklists
done? Unknown
done? Unknown
done? Unknown
Periodic review
done? Unknown

Additional metadata

Last updated
13 July 2022 15:07