The direct photolysis of triclosan (5-chloro-2-(2,4-dichlorophenoxy) phenol), an antimicrobial additive commonly detected in surface waters, is studied. It is found that 2,8-dichlorodibenzo-p-dioxin (2,8-DCDD) is produced in both buffered and natural (Mississippi River) water with yields ranging from 1 to 12% under a variety of conditions. This result indicates that triclosan is likely converted to 2,8-DCDD in sunlight-irradiated surface waters.
|Original language||English (US)|
|Number of pages||4|
|Journal||Journal of Photochemistry and Photobiology A: Chemistry|
|State||Published - May 30 2003|
Bibliographical noteFunding Information:
We thank the National Institutes for Water Resources/USGS National Water Quality Competitive Grants Program and the University of Minnesota for support of this work and Kathy Lee (USGS) for helpful discussions.
Copyright 2019 Elsevier B.V., All rights reserved.
- Direct photolysis
- Natural water
- Photochemical cyclization