Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice | |
Okkenhaug, Gudny ; Zhu, Yong-Guan ; He, Junwen ; Li, Xi ; Luo, Lei ; Mulder, Jan | |
刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
![]() |
2012 | |
卷号 | 46期号:6页码:3155-3162 |
ISSN号 | 0013-936X |
中文摘要 | Foods produced on soils impacted by antimony (Sb) mining activities are a potential health risk due to plant uptake of the contaminant metalloids (Sb) and arsenic (As). Here we report for the first time the chemical speciation of Sb in soil and porewater of flooded paddy soil, impacted by active Sb mining, and its effect on uptake and speciation in rice plants (Oryza sativa L. cv Jiahua). Results are compared with behavior and uptake of As. Pot experiments were conducted under controlled conditions in a climate chamber over a period of 50 days. In pots without rice plants, flooding increased both the concentration of dissolved Sb (up to ca. 2000 mu g L-1) and As (up to ca. 1500 mu g L-1). When rice was present, Fe plaque developing on rice roots acted as a scavenger for both As and Sb, whereby the concentration of As, but not Sb, in porewater decreased substantially. Dissolved Sb in porewater, which occurred mainly as Sb(V), correlated with Ca, indicating solubility governed by Ca antimonate. No significant differences in bioaccumulation factor and translocation factor between Sb and As were observed. Greater relative concentration of Sb(V) was found in rice shoots compared to rice root and porewater, indicating either a preferred uptake of Sb(V) or possibly an oxidation of Sb(III) to Sb(V) in shoots. Adding soil amendments (olivine, hematite) to the paddy soil had no effect on Sb and As concentrations in porewater. |
WOS记录号 | WOS:000301630200017 |
公开日期 | 2014-11-04 |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/7765] ![]() |
专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
推荐引用方式 GB/T 7714 | Okkenhaug, Gudny,Zhu, Yong-Guan,He, Junwen,et al. Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2012,46(6):3155-3162. |
APA | Okkenhaug, Gudny,Zhu, Yong-Guan,He, Junwen,Li, Xi,Luo, Lei,&Mulder, Jan.(2012).Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice.ENVIRONMENTAL SCIENCE & TECHNOLOGY,46(6),3155-3162. |
MLA | Okkenhaug, Gudny,et al."Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice".ENVIRONMENTAL SCIENCE & TECHNOLOGY 46.6(2012):3155-3162. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论