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Spectroscopic study of degradation products of ciprofloxacin, norfloxacin and lomefloxacin formed in ozonated wastewater
文献类型：期刊论文
| 作者 | Liu, Chen1,2,3 ; Nanaboina, Venkateswarlu2; Korshin, Gregory V.2; Jiang, Wenju3
|
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2012-10-15 |
| 卷号 | 46期号:16页码:5235-5246 |
| 关键词 | Ozonation Fluoroquinolones Degradation products and pathways Effluent organic matter Absorbance |
| ISSN号 | 0043-1354 |
| 其他题名 | 二级出水中抗生素类污染物的臭氧降解及光谱学特性研究 |
| 通讯作者 | Jiang, Wenju |
| 合作状况 | 国际 |
| 英文摘要 | This study addressed the formation and properties of degradation products of ciprofloxacin, norfloxacin and lomefloxacin formed during ozonation of secondary wastewater effluent containing these fluoroquinolone antibiotics. The generation of the degradation products was interpreted in the context of transformations of effluent organic matter (EfOM) tracked via absorbance measurements. The structures of 20 degradation products were elucidated for ciprofloxacin and norfloxacin, respectively. 27 degradation products were identified for lomefloxacin. The prevalent oxidation pathways were suggested based on the structures of the identified products formed in the absence and presence of the hydroxyl radical scavenger t-butanol. These pathways were largely similar for all studied fluoroquinolones and involved attacks on the piperazine ring and the quinolone structure. The quinolone ring remained intact in the presence of t-butanol thus indicating that this functional group could only be oxidized by OH radicals while the piperazine ring was readily oxidized by molecular ozone. The cleavage of the quinolone moiety that resulted in several identified degradation products occurred via the attack by hydroxyl radicals on the carbon carbon double bond adjacent to the carboxylic acid group. Lomefloxacin had more diverse oxidation products due to the presence of a methyl group on its piperazinyl ring. The concentrations of the identified degradation products behaved non-monotonically as a function of ozone dose or treatment time, yet exhibited interpretable correlations versus changes of EfOM absorbance. Examination of these correlations allowed developing a novel approach for elucidating the transformations of fluoroquinolone antibiotics during ozonation. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 学科主题 | 环境学 |
| 类目[WOS] | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 关键词[WOS] | FLUOROQUINOLONE ANTIBACTERIAL AGENTS ; ANTIBIOTIC-RESISTANT BACTERIA ; ADVANCED OXIDATION PROCESSES ; TETRACYCLINE RESISTANCE ; REACTION-KINETICS ; TREATMENT PLANTS ; PHARMACEUTICALS ; EFFLUENT ; TRANSFORMATION ; ELIMINATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000309095800032 |
| 公开日期 | 2012-12-09 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4354]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA 3.Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Chen,Nanaboina, Venkateswarlu,Korshin, Gregory V.,et al. Spectroscopic study of degradation products of ciprofloxacin, norfloxacin and lomefloxacin formed in ozonated wastewater[J]. WATER RESEARCH,2012,46(16):5235-5246. |
| APA | Liu, Chen,Nanaboina, Venkateswarlu,Korshin, Gregory V.,&Jiang, Wenju.(2012).Spectroscopic study of degradation products of ciprofloxacin, norfloxacin and lomefloxacin formed in ozonated wastewater.WATER RESEARCH,46(16),5235-5246. |
| MLA | Liu, Chen,et al."Spectroscopic study of degradation products of ciprofloxacin, norfloxacin and lomefloxacin formed in ozonated wastewater".WATER RESEARCH 46.16(2012):5235-5246. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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