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

文献类型: 外文期刊

作者: Ying, Guang-Guo 1 ; Yu, Xiang-Yang 2 ; Kookana, Rai S. 2 ;

作者机构: 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

关键词: triclocarban;triclosan;fate;biodegradation;soil;WASTE-WATER TREATMENT;WIDELY USED BIOCIDE;TREATMENT PLANTS;REDUCTIVE DECHLORINATION;SURFACE WATERS;VINYL-CHLORIDE;FIELD-MEASUREMENTS;ACTIVATED-SLUDGE;SEWAGE;BIODEGRADATION

期刊名称:ENVIRONMENTAL POLLUTION ( 影响因子:8.071; 五年影响因子:8.35 )

ISSN:

年卷期:

页码:

收录情况: SCI

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.

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