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Retrospective monitoring of triclosan and methyl-triclosan in fish

Results from the german environmental specimen bank. Presentation held at the DIOXIN 2004 - 24th International Symposium on Halogenated Environmental Organic Pollutants and POPs, Berlin, 06.-10.09.2004
: Böhmer, W.; Rüdel, H.; Wenzel, A.; Schröter-Kermani, C.

Fulltext urn:nbn:de:0011-n-236666 (1.2 MByte PDF)
MD5 Fingerprint: 6114a6e6060efc05411db559dfabc758
Created on: 24.09.2004

2004, 17 pp.
International Symposium on Halogenated Environmental Organic Pollutants and POPs <24, 2004, Berlin>
Presentation, Electronic Publication
Fraunhofer IME ()

The German Environmental Specimen Bank (ESB) provides a framework within which environmental specimens are systematically drawn from representative ecosystems in Germany and stored under conditions which will prevent the chemical decomposition over a period of decades. The routine sampling started in 1985. Main purpose of the German ESB: the determination of concentrations of substances which had not been recognized as hazardous when archived or which could not be analyzed at the time of sampling with the desirable precision - retrospective monitoring.

Triclosan is widely used as biocide in cosmetics and textiles. Annual consumption in Germany: 0.5 g/person = 40 t/a; estimated. Triclosan is eliminated in WWTP (95 %). It is degradable by photolysis: half-lives in summer are in the range of hours. By microbial transformation methyl-triclosan is formed. Methyl-triclosan is relatively stable against photolytic degradation and more lipophilic than the parent compound. Currently there are no data on the ecotoxicity of methyl-triclosan.

Triclosan levels in bream from German rivers were in the range < 0.2