Transformation of arsenic in offshore sediment under the impact of anaerobic microbial activities
文献类型：期刊论文
| 作者 | Xu, Liying; Zhao, Zhixi; Wang, Shaofeng; Pan, Rongrong; Jia, Yongfeng |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2011-12-15 |
| 卷号 | 45期号:20页码:6781-6788 |
| 关键词 | Arsenic Speciation Sediment Microorganisms Sulfide |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2011.10.041 |
| 英文摘要 | Sediment bound arsenic usually undergoes phase transformation processes when it is transported and buried in deeper settings. This work investigated anaerobic microbial mediated speciation change of the arsenic in offshore sediment and monitored the transformation process of oxyhydroxide associated arsenate to sulfide associated forms. The fate of arsenic and possible pathways of transformation were discussed based on quantitative analysis of aqueous and solid arsenic and iron, and qualitative characterization using X-ray absorption near edge spectroscopy (XANES). Arsenic was released and reduced upon development of anoxic conditions but was resequestered by authigenic minerals later. Most of the arsenic in the sediment was converted to orpiment-like material. Sulfide may have played double roles in arsenic redistribution process, i.e. promoting arsenic release from host oxyhydroxides in early stage and removal of arsenite from solution in the form of arsenic sulfide in later stage. The findings have implications about the pathways of arsenic transformation when arsenate is transported and buried below redox boundaries in offshore sediment. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000298124500019 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://210.72.129.5/handle/321005/121925]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Jia, Yongfeng |
| 作者单位 | 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 | Xu, Liying,Zhao, Zhixi,Wang, Shaofeng,et al. Transformation of arsenic in offshore sediment under the impact of anaerobic microbial activities[J]. WATER RESEARCH,2011,45(20):6781-6788. |
| APA | Xu, Liying,Zhao, Zhixi,Wang, Shaofeng,Pan, Rongrong,&Jia, Yongfeng.(2011).Transformation of arsenic in offshore sediment under the impact of anaerobic microbial activities.WATER RESEARCH,45(20),6781-6788. |
| MLA | Xu, Liying,et al."Transformation of arsenic in offshore sediment under the impact of anaerobic microbial activities".WATER RESEARCH 45.20(2011):6781-6788. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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