ABSTRACT
The aim of the exposure assessment is to determine the nature and extent of contact with chemical substances experienced or anticipated under different conditions.
According to the OECD=IPCS definitions listed in Annex 1 (OECD 2003a): Exposure assessment is ‘‘Evaluation of the exposure of an organism, system or (sub) population
to an agent (and its derivatives).’’ Exposure Assessment is the third step in the process of risk assessment. The term ‘‘human exposure’’ means contact with a substance and has been defined by US-EPA
as taking place at the visible external boundary of the person, i.e., skin and openings into the body such as mouth and nostrils (US-EPA 1992).
