fig5

Figure 5. Mean concentrations of MeP and its metabolites measured as a function of time in (A) sludge-amended soil and (B) compost-amended soil and curves of the applied kinetic models. BEM: Bi-exponential model; FODED: first-order double-exponential decay; FOTC: first-order two-compartment; LM: logistic model; MeP: Methylparaben; MHSM: modified hockey-stick model; OH-MeP: methyl protocatechuate; SFO: a single first-order.