Bioavailability of dissolved contaminants in the aquatic environment

Abstract

The bioavailability of a chemical denotes its ability to interact with living organisms in the environment. The main environmental factors that alter and control the bioavailability of some chemicals (metals, hydrophobic organic contaminants, pesticides) in the aquatic environment are presented. Three integrative sampling tools that improve the characterization of chemical exposure, approaching the assessment of bioavailable concentrations, are also presented. Finally the consideration of the bioavailability of substances in environmental chemical risk assessment is discussed.