期刊
CHEMOSPHERE
卷 66, 期 6, 页码 1052-1056出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2006.07.010
关键词
Triclosan; 2,8-dichlorodibenzo-p-dioxin; photolysis; freshwater; seawater
资金
- NERC [pml010003, pml010001] Funding Source: UKRI
- Natural Environment Research Council [pml010001, pml010003] Funding Source: researchfish
12-days photolysis experiment of triclosan, a widely used bactericide, was performed in freshwater and seawater under a low intensity artificial white light source. Photodegradation of triclosan was observed in both the freshwater and seawater samples. Assuming a first-order reaction, half-lives of triclosan in the freshwater and seawater were approximately 8 and 4 days, respectively. 2,8-Dichlorodibenzo-p-dioxin (DCDD) was detected in both the freshwater and seawater samples after 3 days of irradiation. The photodegradation of triclosan and the production of DCDD suggest that triclosan could be less stable and DCDD might be more stable in seawater than freshwater. As a result, DCDD produced from triclosan survives for a longer time in seawater. (c) 2006 Elsevier Ltd. All rights reserved.
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