What are the main components of a risk assessment model?
A comprehensive risk assessment model typically comprises four key components:
Hazard Identification: This step involves determining whether a substance can cause harm to humans or the environment. It includes reviewing toxicological data, such as dose-response relationships, to ascertain potential adverse effects. Dose-Response Assessment: This component evaluates the relationship between the magnitude of exposure and the probability of occurrence of health effects. It helps in identifying thresholds at which adverse effects occur. Exposure Assessment: This step estimates the magnitude, duration, and frequency of human exposure to the chemical in question. It considers various routes of exposure, including inhalation, ingestion, and dermal contact. Risk Characterization: This final step integrates the information from the previous stages to provide a qualitative or quantitative estimate of the risk. It includes a discussion of uncertainties and assumptions involved in the assessment.
