PART 5_2 Chemical contaminants and ecotoxicology
PART 5_2 Chemical contaminants and ecotoxicology
PART 5_2 Chemical contaminants and ecotoxicology
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Bioaccumulation - where the chemical<br />
concentration in an organism achieves a level<br />
that exceeds that in the water/media as a result<br />
of chemical uptake through all routes of<br />
exposure.<br />
Bioaccumulation factor = Conc. in organism<br />
Conc. in food<br />
(or ingested water)<br />
•Bio-accumulation of Cd is higher than most<br />
metals as it is assimilated rapidly <strong>and</strong><br />
excreted slowly<br />
•depends on the rate of excretion