Interaction of ciprofloxacin chlorination products with bacteria in drinking water distribution systems
文献类型：期刊论文
| 作者 | Wang, Haibo; Hu, Chun; Liu, Lizhong; Xing, Xueci |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2017-10-05 |
| 卷号 | 339期号:0页码:174-181 |
| 关键词 | Ciprofloxacin Chlorination Products Biotransformation Bacterial Community Antibiotic Resistance Genes Genotoxicity |
| 英文摘要 | The interaction of ciprofloxacin chlorination products (CIP-CPs) with bacteria in drinking water distribution systems (DWDSs) was investigated. The piperazine ring of CIP was destroyed by chlorination. Among of CIP-CPs, by the bacterial role, 7.63% of the derivative with two carboxylic groups went through decarboxylation to form desethylene ciprofloxacin, and then loss of C2H5N group generated aniline compound. Furthermore, 12.3% of the aniline compound, 7.60% of chlorinated aniline compound and 1.35% of defluorinated product were bio-mineralized. Therefore, the chlorine and bacteria played synergistic effects on transformation of CIP-CPs in DWDSs, contributing to the obvious decrease of genotoxicity in effluents. Correspondingly, the TEQ(4-NQO) decreased from 667 mu g/L to 9.41 mu g/L. However, compared with DWDSs without CIP-CPs, the relative abundance of mexA and qnrS increased 1-fold in effluents and the relative abundance of qnrA and qnrB increased 3-fold in biofllms in DWDSs with CIP-CPs. mexA and qnrS positively correlated with Hyphomicrobium, Sphingomonas and Novosphingobium (p < 0.05), while qnrA and qnrB positively correlated with Shewanella and Helicobacter (p < 0.05), indicating the increase of antibiotic resistance genes (ARGs) came from the growth of these bacterial genera by transformation of CIP-CPs in DWDSs. These results suggested that biotransformation of antibiotics might increase ARGs risk in DWDSs. (C) 2017 Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39713]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Haibo,Hu, Chun,Liu, Lizhong,et al. Interaction of ciprofloxacin chlorination products with bacteria in drinking water distribution systems[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,339(0):174-181. |
| APA | Wang, Haibo,Hu, Chun,Liu, Lizhong,&Xing, Xueci.(2017).Interaction of ciprofloxacin chlorination products with bacteria in drinking water distribution systems.JOURNAL OF HAZARDOUS MATERIALS,339(0),174-181. |
| MLA | Wang, Haibo,et al."Interaction of ciprofloxacin chlorination products with bacteria in drinking water distribution systems".JOURNAL OF HAZARDOUS MATERIALS 339.0(2017):174-181. |
入库方式： OAI收割
来源：生态环境研究中心
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