Photolytic degradation of triclosan in freshwater and seawater

被引：245

作者：

Aranami, Kazushi

Readman, James W.

机构：

[1] Natl Inst Environm Studies, Tsukuba, Ibaraki 3050053, Japan

[2] Plymouth Marine Lab, Plymouth PL1 3DK, Devon, England

来源：

CHEMOSPHERE | 2007年 / 66卷 / 06期

基金：

英国自然环境研究理事会;

关键词：

Triclosan; 2,8-dichlorodibenzo-p-dioxin; photolysis; freshwater; seawater;

D O I：

10.1016/j.chemosphere.2006.07.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 [工学]; 0830 [环境科学与工程];

摘要：

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.

引用

页码：1052 / 1056

页数：5

共 15 条

[1]

Triclosan, a commonly used bactericide found in human milk and in the aquatic environment in Sweden [J].