Document Detail

Benzotriazole and tolyltriazole as aquatic contaminants. 1. Input and occurrence in rivers and lakes.
MedLine Citation:
PMID:  17180965     Owner:  NLM     Status:  MEDLINE    
The complexing agents benzotriazole (BT) and tolyltriazole (TT) are not only widely applied as anticorrosives, e.g., in aircraft deicer and anti-icer fluid (ADAF), but they are also used for so-called silver protection in dishwasher detergents. Due to their low biodegradability and limited sorption tendency, BT and TT are only partly removed in wastewater treatment. Residual concentrations of BT and TT were determined in ambient surface waters in Switzerland including 7 rivers which have distinct water flows and receive treated wastewater effluents at various dilution ratios. A maximum BT concentration of 6.3 microg/L was found in the Glatt River, and a maximum mass flow of 277 kg BT per week was observed in the Rhine River. In most cases, TT was about a factor 5-10 less abundant. During winter 2003/4, BT mass flows at 2 locations in the lower stretch of the Glatt River clearly indicated the input from nearby Zurich airport, where BT was applied as an anticorrosive ADAF component. BT concentrations measured in the three lakes Greifensee, Lake Zurich, and Lake Geneva were approximately 1.2, 0.1-0.4, and 0.2 microg/L, respectively. The observed environmental occurrences indicate that BT and TT are ubiquitous contaminants in the aquatic environment and that they belong to the most abundant individual water pollutants.
Walter Giger; Christian Schaffner; Hans-Peter E Kohler
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  40     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-12-21     Completed Date:  2007-02-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7186-92     Citation Subset:  IM    
Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Dübendorf, Switzerland.
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MeSH Terms
Environmental Monitoring / statistics & numerical data*
Fresh Water / chemistry*
Triazoles / analysis*
Water Pollutants, Chemical / analysis*
Reg. No./Substance:
0/Triazoles; 0/Water Pollutants, Chemical; 27556-51-0/benzotriazole

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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