The model is developed for a laboratory test system with constant conditions like air temperature, air humidity, chemical concentration in soil and transpiration rate. The concentration of a chemical in the plant as well as the concentration in the particles on the plant is governed by a first-order linear differential equation with constant coefficients. An analytical solution is implemented. Chemical distribution in soil, and between plant and atmosphere is calculated by help of partition coefficients. Volatilization from plantinto air, and chemical input from air into plant are governed by the conductivity of the leaves and the boundary air layer.
Metabolism is taken into consideration by using a first-order degradation rate.
This is a list of model equations sorted by their characteristics with hypertext links for more details. This is a list of model quantities sorted by their characteristics with hypertext links for more details. References Briggs, G.G., Bromilow, R.H., Evans, A.A., 1982. Relationships Between Lipophilicity and Root Uptake and Translocation of Non-ionisedChemicals by Barley. Briggs, G.G., Bromilow, R.H., Evans, A.A., Williams, M., 1983.