IHEP OpenIR  > 多学科研究中心
Antimony(III) oxidation and antimony(V) adsorption reactions on synthetic manganite
Wang, XQ; He, MC; Lin, CY; Gao, YX; Zheng, L; Gao YX(高愈希); Zheng L(郑雷)
2012
发表期刊CHEMIE DER ERDE-GEOCHEMISTRY
卷号72期号:4页码:41-47
摘要Oxidation and adsorption processes critically affect the mobility of antimony (Sb) in the environment. Minerals such as manganese oxides appear to be important adsorbents or oxidants for Sb in soils and sediments. In this study, Sb oxidation and adsorption onto synthetic manganite (gamma-MnOOH) in aqueous suspensions were comprehensively investigated. The oxidation of Sb(III) by manganite occurred on a time scale of minutes and Sb(V) was released into the suspension as soon as the reaction began. X-ray absorption near edge structure (XANES) analyses showed that Sb(V) was the dominant species adsorbed on manganite, suggesting that manganite acts as a strong oxidant of Sb(III). The effects of temperature on the adsorption rates of Sb(V) were investigated. Thermodynamic parameters indicated that adsorption of Sb(V) by manganite is an exothermic process and is spontaneous at the specific temperatures investigated. A change in ionic strength from 0.001 to 0.1 M NaNO3 had little effect on the adsorption of Sb(V) onto manganite, indicating that Sb(V) forms inner-sphere complexes at the mineral surface. Anions such as phosphate, sulfate, silicate and carbonate, which may be present in natural waters, were ineffective competitors with Sb(V) for sorption sites. (C) 2012 Elsevier GmbH. All rights reserved.
关键词Antimony Oxidation Adsorption Manganite XANES
学科领域Geochemistry & Geophysics
DOI10.1016/j.chemer.2012.02.002
收录类别SCI
WOS记录号WOS:000307681100007
引用统计
被引频次:34[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/223782
专题多学科研究中心
推荐引用方式
GB/T 7714
Wang, XQ,He, MC,Lin, CY,et al. Antimony(III) oxidation and antimony(V) adsorption reactions on synthetic manganite[J]. CHEMIE DER ERDE-GEOCHEMISTRY,2012,72(4):41-47.
APA Wang, XQ.,He, MC.,Lin, CY.,Gao, YX.,Zheng, L.,...&郑雷.(2012).Antimony(III) oxidation and antimony(V) adsorption reactions on synthetic manganite.CHEMIE DER ERDE-GEOCHEMISTRY,72(4),41-47.
MLA Wang, XQ,et al."Antimony(III) oxidation and antimony(V) adsorption reactions on synthetic manganite".CHEMIE DER ERDE-GEOCHEMISTRY 72.4(2012):41-47.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
523.pdf(373KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, XQ]的文章
[He, MC]的文章
[Lin, CY]的文章
百度学术
百度学术中相似的文章
[Wang, XQ]的文章
[He, MC]的文章
[Lin, CY]的文章
必应学术
必应学术中相似的文章
[Wang, XQ]的文章
[He, MC]的文章
[Lin, CY]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。