Photochemical conversion of triclosan to 2,8-dichlorodibenzo-p-dioxin in aqueous solution

Douglas E. Latch; Jennifer L. Packer; William A. Arnold; Kristopher McNeill

doi:10.1016/S1010-6030(03)00103-5

Photochemical conversion of triclosan to 2,8-dichlorodibenzo-p-dioxin in aqueous solution

Douglas E. Latch, Jennifer L. Packer, William A. Arnold, Kristopher McNeill

Research output: Contribution to journal › Article › peer-review

241 Scopus citations

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.

Original language	English (US)
Pages (from-to)	63-66
Number of pages	4
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	158
Issue number	1
DOIs	https://doi.org/10.1016/S1010-6030(03)00103-5
State	Published - May 30 2003

Bibliographical note

Funding 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:
Copyright 2019 Elsevier B.V., All rights reserved.

Keywords

2,8-Dichlorodibenzo-p-dioxin
Direct photolysis
Natural water
Photochemical cyclization
Triclosan

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title = "Photochemical conversion of triclosan to 2,8-dichlorodibenzo-p-dioxin in aqueous solution",

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.",

keywords = "2,8-Dichlorodibenzo-p-dioxin, Direct photolysis, Natural water, Photochemical cyclization, Triclosan",

author = "Latch, {Douglas E.} and Packer, {Jennifer L.} and Arnold, {William A.} and Kristopher McNeill",

note = "Funding 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: Copyright 2019 Elsevier B.V., All rights reserved.",

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AU - Latch, Douglas E.

AU - Packer, Jennifer L.

AU - Arnold, William A.

AU - McNeill, Kristopher

N1 - Funding 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: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2003/5/30

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N2 - 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.

AB - 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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KW - Natural water

KW - Photochemical cyclization

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Photochemical conversion of triclosan to 2,8-dichlorodibenzo-p-dioxin in aqueous solution

Abstract

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Keywords

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