Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 158, Issue 1, Pages 63-66Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S1010-6030(03)00103-5
Keywords
triclosan; 2,8-dichlorodibenzo-p-dioxin; direct photolysis; photochemical cyclization; natural water
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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. (C) 2003 Elsevier Science B.V. All rights reserved.
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