Table 2 Equations used in scenario-based calculations
From: Addressing systemic problems with exposure assessments to protect the public’s health
Route | Calculation of Exposure |
|---|---|
Inhalation | Exposure = concentration of a chemical in the air (mass per volume) x inhalation rate (volume breathed per unit time) |
Ingestion | Exposure = concentration of chemical in food or other medium (mass of chemical per mass of medium or volume of medium) x ingestion rate (mass or volume of medium ingested per unit time) |
Dermal | Exposure = mass of the medium (solid, liquid or gas) containing the chemical in contact with the skin x concentration of the chemical (mass of chemical per mass of medium) x skin surface in contact with the medium |