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题名: Sorption and degradation of triclosan in sediments and its effect on microbes
作者: Huang, Xiaolong1, 2; Wu, Chenxi1; Hu, Hongjuan3; Yu, Yuhe4; Liu, Jiantong1
通讯作者: Wu, CX (reprint author), Donghu South Rd 7, Wuhan 430072, Peoples R China.
关键词: Triclosan ; Sediment ; Bioavailability ; Enzyme activity ; Microbial community
刊名: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
发表日期: 2015-06-01
DOI: 10.1016/j.ecoenv.2015.03.002
卷: 116, 页:76-83
收录类别: SCI
文章类型: Article
部门归属: [Huang, Xiaolong ; Wu, Chenxi ; Liu, Jiantong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Peoples R China ; [Huang, Xiaolong] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China ; [Hu, Hongjuan] Xuzhou Environm Monitoring Ctr Stn, Xuzhou, Peoples R China ; [Yu, Yuhe] Chinese Acad Sci, Inst Hydrobiol, Key Lab Biodivers & Conservat Aquat Organisms, Wuhan, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences ; Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology
英文摘要: Sorption and degradation behavior of triclosan (TCS) and its effect on microbes were studied in three sediments spiked at different concentration levels (1, 10, and 100 mu g g(-1)). TCS showed a strong affiliation to all the sediments with linear adsorption coefficients (K-d) that varied from 220 to 1092 L g(-1), and the adsorption capacity is related to the total organic carbon (TOC) contents of the sediments. The half-lives of TCS varied from 55 to 239 days, and were longer in sediment with higher Kd. TCS showed minor effect on the activities of fluorescein diacetate hydrolase, dehydrogenase, alkaline phosphatase, and urease in the 1 mu g g(-1) treatment, but at higher levels, a short-term effect was observed followed by a rapid recovery except the urease activity in sediment with the lowest adsorption capacity. PCA plots of phospholipid fatty acid showed that the phenotypic community in sediments with low TOC were more sensitive to TCS. A positive relation between bacterial biomass and total microbial biomass suggests that changes of bacteria biomass were responsible for changes of total microbial biomass in treatments. Denaturing gradient gel electrophoresis analysis of the 16 S rDNA showed that the bacterial community structure deviated further away from the control at higher TCS concentration levels, with similarity coefficients in Un-weighted Pair Group Mathematics Average clustering between control and 100 mu g g(-1) treatment varied from 038 to 0.73. Both degradation rate and toxic effects of TCS decreased in sediment with higher sorption capacity, which can be attributed to a reduced bioavailablity. (C) 2015 Elsevier Inc. All rights reserved.
关键词[WOS]: BIOLOGICAL DEGRADATION ; COMMUNITY COMPOSITION ; TREATMENT PLANTS ; SURFACE WATERS ; RAPID METHOD ; SOILS ; TRICLOCARBAN ; FATE ; ENVIRONMENT ; RESISTANCE
语种: 英语
WOS记录号: WOS:000353313700010
ISSN号: 0147-6513
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/23940
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
3.Xuzhou Environm Monitoring Ctr Stn, Xuzhou, Peoples R China
4.Chinese Acad Sci, Inst Hydrobiol, Key Lab Biodivers & Conservat Aquat Organisms, Wuhan, Peoples R China
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