The potential of a substance to bioaccumulate in the aquatic environme
nt into an organism depends particularly on its lipophilicity and its
metabolism within the organism. Bioaccumulation is an exposure-related
parameter and will determine the body burden but it is not an 'effect
' or hazard in itself. Therefore, when appropriate, bioaccumulation sh
ould be included as an exposure related parameter in the environmental
risk assessment of substances.