There are several types of exposure models, each with specific applications:
Deterministic Models: These models use fixed input parameters to give a single exposure estimate. They are straightforward and often used for regulatory purposes. Stochastic Models: These incorporate variability and uncertainty by using probability distributions for input parameters, giving a range of possible exposure estimates. Physiologically Based Pharmacokinetic (PBPK) Models: These models simulate the absorption, distribution, metabolism, and excretion of chemicals in the body, providing detailed insights into internal dose metrics. Environmental Fate Models: These models predict the movement and transformation of chemicals in the environment, considering factors like degradation and partitioning.