中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
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
DOI10.1016/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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