Photochemical behavior of antibiotics impacted by complexation effects of concomitant metals: a case for ciprofloxacin and Cu(II)
文献类型：期刊论文
| 作者 | Zhang, Yifei1; Wei, Xiaoxuan1; Chen, Jingwen1; Xie, Qing1; Zhang, Siyu1,2; Li, Yingjie1; Xie, Hongbin1 |
| 刊名 | ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
 |
| 出版日期 | 2015 |
| 卷号 | 17期号:7页码:1220-1227 |
| ISSN号 | 2050-7887 |
| DOI | 10.1039/c5em00204d |
| 英文摘要 | Many water bodies, especially those adjacent to aquaculture and livestock breeding areas, are contaminated by both antibiotics and transition metals. However, the effects of the interaction between antibiotics and transition metals on the environmental behavior and the ecotoxicology of antibiotics are largely unknown. We hypothesized that antibiotics may coordinately bind with metal ions, and this complexation may affect the environmental photochemical behavior of antibiotics. We took ciprofloxacin (CIP) and Cu(II) as a case, and employed simulated sunlight experiments and density functional theory calculations to investigate the underlying reaction mechanisms. The results showed that monovalent cationic ciprofloxacin (H2CIP+) that is predominant in the normal pH range (6-9) of surface waters can chelate with hydrated Cu(II) to form [Cu(H2CIP)(H2O)(4)](3+). Compared with H2CIP+, [Cu(H2CIP)(H2O)(4)](3+) has different molecular orbitals, and atomic charge distribution. As a result, [Cu(H2CIP)(H2O)(4)](3+) showed dissimilar light absorption properties, slower direct photolytic rates, lower O-1(2) generation ability and weaker reactivity towards O-1(2). Due to the Cu(II) complexation, the apparent photodegradation of H2CIP+ was inhibited, and the photolytic pathways and product distribution were altered. This study implies that for an accurate ecological risk assessment of antibiotics under transition metal co-contamination conditions, the effects of metal complexation should be considered. |
| WOS研究方向 | Chemistry ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000357793300002 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://210.72.129.5/handle/321005/122117]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Chen, Jingwen |
| 作者单位 | 1.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yifei,Wei, Xiaoxuan,Chen, Jingwen,et al. Photochemical behavior of antibiotics impacted by complexation effects of concomitant metals: a case for ciprofloxacin and Cu(II)[J]. ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,2015,17(7):1220-1227. |
| APA | Zhang, Yifei.,Wei, Xiaoxuan.,Chen, Jingwen.,Xie, Qing.,Zhang, Siyu.,...&Xie, Hongbin.(2015).Photochemical behavior of antibiotics impacted by complexation effects of concomitant metals: a case for ciprofloxacin and Cu(II).ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,17(7),1220-1227. |
| MLA | Zhang, Yifei,et al."Photochemical behavior of antibiotics impacted by complexation effects of concomitant metals: a case for ciprofloxacin and Cu(II)".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 17.7(2015):1220-1227. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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