Triclosan News Stories
Photochemical Conversion of Triclosan to 2,8-DCDD
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J. Photochem. Photobiol. A. 2003, 158/1 63-66.(Link
to Journal)
Photochemical conversion of triclosan to 2,8-dichlorodibenzo-p-dioxin in aqueous solution Douglas E. Latch,1 Jennifer L. Packer,2 William A. Arnold,2 and Kristopher McNeill1 1Department of Chemistry, University of Minnesota, 2Department of Civil Engineering, University of Minnesota Abstract 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. |
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