In a-biotic samples obtained from the natural aquatic environment evidence has been reported for the presence of silicones from antropogenic sources. It has also been reported however that a-biotic transformation may play an important role in the environmental fate of these chemicals. In particular clay catalyzed hydrolysis may be important. Hitherto little is known about the ability of (micro)organisms to transform silicon compounds. Since most organosilicon compounds are che micals with very low aqueous solubilities and high solubilities in organic solvents it was expected that these chemicals would accumultae to high concentrations in organisms. This however, is not what has been found in laboratory tests with fish or mammals, or in biota sampled in the natural environment. The low bioaccumulation factors may be explained by high rates of elimination of the short chain silicones and by a lack of uptake for the long chain chemicals.
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- Environmental Fate of Organosilicon Chemicals
Guus M. Asyee
John R. Parsons
- Springer Netherlands
Systemische Notwendigkeit zur Weiterentwicklung von Hybridnetzen