Effect of iron oxide reductive dissolution on the transformation and immobilization of arsenic in soils: New insights from X-ray photoelectron and X-ray absorption spectroscopy
文献类型：期刊论文
| 作者 | Fan, JX ; Wang, YJ ; Liu, C ; Wang, LH ; Yang, K ; Zhou, DM ; Li, W ; Sparks, DL |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2014 |
| 卷号 | 279页码:212—219 |
| 关键词 | 16 CHINESE SOILS PHYSIOCHEMICAL PROPERTIES ADSORPTION CAPACITY SURFACE-CHEMISTRY PADDY SOILS SORPTION FERRIHYDRITE SPECIATION RELEASE XPS |
| ISSN号 | 0304-3894 |
| 通讯作者 | yjwang@issas.ac.cn ; dmzhou@issas.ac.cn |
| 英文摘要 | The geochemical behavior and speciation of arsenic (As) in paddy soils is strongly controlled by soil redox conditions and the sequestration by soil iron oxyhydroxides. Hence, the effects of iron oxide reductive dissolution on the adsorption, transformation and precipitation of As(III) and As(V) in soils were investigated using batch experiments and synchrotron based techniques to gain a deeper understanding at both macroscopic and microscopic scales. The results of batch sorption experiments revealed that the sorption capacity of As(V) on anoxic soil was much higher than that on control soil. Synchrotron based X-ray fluorescence (mu-XRF) mapping studies indicated that As was heterogeneously distributed and was mainly associated with iron in the soil. X-ray absorption near edge structure (XANES), micro-X-ray absorption near edge structure (mu-XANES) and X-ray photoelectron spectroscopy (XPS) analyses revealed that the primary speciation of As in the soil is As(V). These results further suggested that, when As(V) was introduced into the anoxic soil, the rapid coprecipitation of As(V) with ferric/ferrous ion prevented its reduction to As(III), and was the main mechanism controlling the immobilization of As. This research could improve the current understanding of soil As chemistry in paddy and wetland soils. (C) 2014 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000343390100027 |
| 公开日期 | 2015-03-13 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/14101]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Fan, JX,Wang, YJ,Liu, C,et al. Effect of iron oxide reductive dissolution on the transformation and immobilization of arsenic in soils: New insights from X-ray photoelectron and X-ray absorption spectroscopy[J]. JOURNAL OF HAZARDOUS MATERIALS,2014,279:212—219. |
| APA | Fan, JX.,Wang, YJ.,Liu, C.,Wang, LH.,Yang, K.,...&Sparks, DL.(2014).Effect of iron oxide reductive dissolution on the transformation and immobilization of arsenic in soils: New insights from X-ray photoelectron and X-ray absorption spectroscopy.JOURNAL OF HAZARDOUS MATERIALS,279,212—219. |
| MLA | Fan, JX,et al."Effect of iron oxide reductive dissolution on the transformation and immobilization of arsenic in soils: New insights from X-ray photoelectron and X-ray absorption spectroscopy".JOURNAL OF HAZARDOUS MATERIALS 279(2014):212—219. |
入库方式： OAI收割
来源：上海应用物理研究所
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