Biological degradation of triclocarban and triclosan in a soil under aerobic and anaerobic conditions and comparison with environmental fate modelling

被引：328
|
作者：
Ying, Guang-Guo [1 ,2 ]
Yu, Xiang-Yang [2 ,3 ]
Kookana, Rai S. [2 ]
机构：
[1] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
[2] CSIRO Land & Water, Adelaide Lab, Glen Osmond, SA 5064, Australia
[3] Jiangsu Acad Agr Sci, Food Safety Res Inst, Nanjing 210014, Peoples R China
来源：
ENVIRONMENTAL POLLUTION | 2007年 / 150卷 / 03期
基金：
中国国家自然科学基金;
关键词：
triclocarban; triclosan; fate; biodegradation; soil;
D O I：
10.1016/j.envpol.2007.02.013
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Triclocarban and triclosan are two antimicrobial agents widely used in many personal care products. Their biodegradation behaviour in soil was investigated by laboratory degradation experiments and environmental fare modelling. Quantitative structure-activity relationship (QSAR) analyses showed that triclocarban and triclosan had a tendency to partition into soil or sediment in the environment. Fate modelling suggests that either triclocarban or triclosan "does not degrade fast" with its primary biodegradation half-life of "weeks" and ultimate biodegradation half-life of "months". Laboratory experiments showed that triclocarban and triclosan were degraded in the aerobic soil with half-life of 108 days and 18 days, respectively. No negative effect of these two antimicrobial agents on soil microbial activity was observed in the aerobic soil samples during the experiments. But these two compounds persisted in the anaerobic soil within 70 days of the experimental period. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：300 / 305
页数：6
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