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Retrospective monitoring of triclosan and methyl-triclosan in fish. Results from the German Environmental Specimen Bank

Abstract

During the last years there were several reports on the appearance of the biocides triclosan (TCS; 5- chloro-2-(2,4-dichlorophenoxy)phenol; CAS No. 3380-34-5) and chlorophene (CP; 4-Chloro-2- (phenylmethyl)phenol; CAS No. 120-32-1) in the environment. TCS is used in numerous personal care products like toothpaste and soaps, but also in textiles and shoes. The current annual consumption in Germany is estimated to be 40 t (0.5 g per capita and year). During use large amounts of TCS and CP are disposed into waste water. Modern waste water treatment plants (WWTP) eliminate approximately 95 % of TCS, mainly by biodegradation and adsorption to sludge. It was observed that during waste water treatment methyl-triclosan (MTCS; 5-chloro-2-(2,4-dichlorophenoxy)anisole; CAS No. 4640-01-1) is formed, probably due to microbial methylation. In a WWTP effluent up to 1 % MTCS in relation to TCS was detected. The environmental half-life of TCS is assumed to be low, mainly because it is susceptible to photodegradation at environmental pH levels while MTCS is stable under these conditions. The logPow values of 4.7 for TCS and 5.2 for MTCS (estimated with KowWin Vers. 1,67, respectively) indicate potential for bioaccumulation. Based in order to investigate the exposure of aquatic organisms towards CP, TCS and MTCS  More>>
Authors:
Boehmer, W; Ruedel, H; Wenzel, A; [1]  Schroeter-Kermani, C [2] 
  1. Fraunhofer IME, Schmallenberg (Germany)
  2. Umweltbundesamt, Berlin (Germany)
Publication Date:
Sep 15, 2004
Product Type:
Conference
Report Number:
ETDE-DE-1546
Resource Relation:
Conference: Dioxin 2004: 24. international symposium on halogenated environmental organic pollutants and POPs, Berlin (Germany), 6-10 Sep 2004; Related Information: In: Dioxin 2004: 24. international symposium on halogenated environmental organic pollutants and POPs. Proceedings, Organohalogen Compounds v. 66, 4035 pages.
Subject:
54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; MONITORING; WATER POLLUTION; PESTICIDES; CHLORINATED AROMATIC HYDROCARBONS; FISHES; BIOLOGICAL ACCUMULATION; METHYLATION; QUANTITATIVE CHEMICAL ANALYSIS; SAMPLE PREPARATION; ANNUAL VARIATIONS; QUALITY ASSURANCE; RIVERS; FEDERAL REPUBLIC OF GERMANY
Sponsoring Organizations:
Bundesmin. fuer Umwelt, Naturschutz und Reaktorsicherheit, Bonn (Germany)
OSTI ID:
20828015
Research Organizations:
Technische Univ. Berlin (Germany). Inst. fuer Technischen Umweltschutz
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ISBN 3-928379-30-5; TRN: DE07G1504
Availability:
Available as CD-ROM; www.osti.gov/servlets/purl/20828015-MjxtmA/; Commercial reproduction prohibited; OSTI as DE20828015
Submitting Site:
DE
Size:
page(s) 1489-1494
Announcement Date:
Jan 27, 2007

Citation Formats

Boehmer, W, Ruedel, H, Wenzel, A, and Schroeter-Kermani, C. Retrospective monitoring of triclosan and methyl-triclosan in fish. Results from the German Environmental Specimen Bank. Germany: N. p., 2004. Web.
Boehmer, W, Ruedel, H, Wenzel, A, & Schroeter-Kermani, C. Retrospective monitoring of triclosan and methyl-triclosan in fish. Results from the German Environmental Specimen Bank. Germany.
Boehmer, W, Ruedel, H, Wenzel, A, and Schroeter-Kermani, C. 2004. "Retrospective monitoring of triclosan and methyl-triclosan in fish. Results from the German Environmental Specimen Bank." Germany.
@misc{etde_20828015,
title = {Retrospective monitoring of triclosan and methyl-triclosan in fish. Results from the German Environmental Specimen Bank}
author = {Boehmer, W, Ruedel, H, Wenzel, A, and Schroeter-Kermani, C}
abstractNote = {During the last years there were several reports on the appearance of the biocides triclosan (TCS; 5- chloro-2-(2,4-dichlorophenoxy)phenol; CAS No. 3380-34-5) and chlorophene (CP; 4-Chloro-2- (phenylmethyl)phenol; CAS No. 120-32-1) in the environment. TCS is used in numerous personal care products like toothpaste and soaps, but also in textiles and shoes. The current annual consumption in Germany is estimated to be 40 t (0.5 g per capita and year). During use large amounts of TCS and CP are disposed into waste water. Modern waste water treatment plants (WWTP) eliminate approximately 95 % of TCS, mainly by biodegradation and adsorption to sludge. It was observed that during waste water treatment methyl-triclosan (MTCS; 5-chloro-2-(2,4-dichlorophenoxy)anisole; CAS No. 4640-01-1) is formed, probably due to microbial methylation. In a WWTP effluent up to 1 % MTCS in relation to TCS was detected. The environmental half-life of TCS is assumed to be low, mainly because it is susceptible to photodegradation at environmental pH levels while MTCS is stable under these conditions. The logPow values of 4.7 for TCS and 5.2 for MTCS (estimated with KowWin Vers. 1,67, respectively) indicate potential for bioaccumulation. Based in order to investigate the exposure of aquatic organisms towards CP, TCS and MTCS in Germany a retrospective monitoring of breams (Abramis brama) from representative rivers was initiated. Samples from the period 1994 to 2003 were taken from the archive of the German Environmental Specimen Bank (ESB) to evaluate temporal changes and regional differences of the occurrence of the target compounds.}
place = {Germany}
year = {2004}
month = {Sep}
}