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Fit of First-Order Kinetic Model in Degradation Processes
Fit of First-Order Kinetic Model in Degradation Processes
Many chemical, biochemical, and biological degradation processes follow first-order kinetics, which is characterized by a single exponential rate constant. In this Demonstration, we evaluate the possibility that the same experimental data can also be fitted with a general fixed-order kinetic model or with the stretched exponential (Weibull) model with , which implies either a different order or nonlinear kinetics. This is done by generating data using the first-order kinetics model, with and without added random scatter of a chosen amplitude. The data is then fitted to these alternative models, varying the value of . It is shown that there might be numerous situations in which first-order kinetics and the two alternative models with give indistinguishable results.
n≠1
n≠1
n=1.0±~0.2