For building the model, the initial step is to set up a mass balance equation for each phase in question that includes fugacities, concentrations, fluxes and amounts.
The Z-values are calculated using the equilibrium partitioning coefficients of the chemicals, Henry's law constant and other related physical-chemical properties.
The concept has been used to assess the relative propensity for chemicals to transform from temperate zones and “condense out” at the polar regions.
The multicompartmental approach has been applied to the “quantitative water air sediment interaction" or "QWASI" model designed to assist in understanding chemical fate in lakes.
[7] Another application found in POPCYCLING-BALTIC model, which is describing fate of persistent organic pollutants in Baltic region.