Baker, P.G.Crouch, A.M.Le Roux, Shirley Theodora Rose2018-07-312024-05-132018-07-312024-05-132017https://hdl.handle.net/10566/14737Philosophiae Doctor - PhD (Chemistry)Anthropogenic sources as well as natural contributions (e.g. volcanic activity and evaporation from the oceans) have increased mercury levels in the environment. Mercury deposits mainly in sediments, and it finally ends up in aquatic systems. Sediments are capable of immobilising toxic metals but this does not guarantee that the metals are safely removed from aquatic systems.enUniversity of the Western Cape