Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer
文献类型：期刊论文
| 作者 | Bennett, Karen A.1; Kelly, Simon D.2; Tang, Xiangyu3 ; Reid, Brian J.1
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 62页码:39-48 |
| 关键词 | Antibiotics Sulphonamide Groundwater contamination Biodegradation Stable isotope fractionation IRMS |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/j.jes.2017.08.010 |
| 英文摘要 | Understanding antibiotic biodegradation is important to the appreciation of their fate and removal from the environment. In this research an Isotope Ratio Mass Spectrometry (IRMS) method was developed to evaluate the extent of biodegradation of the antibiotic, sulphanilamide, in contaminated groundwater. Results indicted an enrichment in delta C-13 of 8.44% from -26.56 (at the contaminant source) to -18.12%(300 m downfield of the source). These results confirm reductions in sulphanilamide concentrations (from 650 to 10 mg/L) across the contaminant plume to be attributable to biodegradation (56%) vs. other natural attenuation processes, such as dilution or dispersion (42%). To understand the controls on sulphanilamide degradation ex-situ microcosms assessed the influence of sulphanilamide concentration, redox conditions and an alternative carbon source. Results indicated, high levels of anaerobic capacity (similar to 50% mineralisation) to degrade sulphanilamide under high (263 mg/L), moderate (10 mg/L) and low (0.02 mg/L) substrate concentrations. The addition of electron acceptors; nitrate and sulphate, did not significantly enhance the capacity of the groundwater to anaerobically biodegrade sulphanilamide. Interestingly, where alternative carbon sources were present, the addition of nitrate and sulphate inhibited sulphanilamide biodegradation. These results suggest, under in-situ conditions, when a preferential carbon source was available for biodegradation, sulphanilamide could be acting as a nitrogen and/or sulphur source. These findings are important as they highlight sulphanilamide being used as a carbon and a putative nitrogen and sulphur source, under prevailing iron reducing conditions. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 语种 | 英语 |
| WOS记录号 | WOS:000418892300006 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/20800]  |
| 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 |
| 通讯作者 | Reid, Brian J. |
| 作者单位 | 1.Univ East Anglia, Sch Environm Sci, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England 2.IAEA, Food & Environm Protect Lab, A-1400 Vienna, Austria 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bennett, Karen A.,Kelly, Simon D.,Tang, Xiangyu,et al. Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2017,62:39-48. |
| APA | Bennett, Karen A.,Kelly, Simon D.,Tang, Xiangyu,&Reid, Brian J..(2017).Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer.JOURNAL OF ENVIRONMENTAL SCIENCES,62,39-48. |
| MLA | Bennett, Karen A.,et al."Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer".JOURNAL OF ENVIRONMENTAL SCIENCES 62(2017):39-48. |
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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