中国科学院上海应用物理研究所机构知识库
Advanced  
CAS OpenIR  > 中科院上海应用物理研究所2011-2017年  > 期刊论文
题名: Solid-solution partitioning and thionation of diphenylarsinic acid in a flooded soil under the impact of sulfate and iron reduction
作者: Zhu, M; Tu, C; Hu, XF; Zhang, HB; Zhang, LJ; Wei, J; Li, Y; Luo, YM; Christie, P
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
出版日期: 2016
卷号: 569, 页码:1579-1586
关键词: Diphenylarsinic acid ; Solid-solution partitioning ; Thionation ; Soil incubation experiment ; Scanning transmission X-ray microscopy
DOI: 10.1016/j.scitotenv.2016.07.001
通讯作者: Luo, YM (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, 17 Chunhui Rd, Yantai 264003, Peoples R China.
文章类型: 期刊论文
英文摘要: Diphenylarsinic acid (DPAA) is a major organic arsenic (As) compound derived from abandoned chemical weapons. The solid-solution partitioning and transformation of DPAA in flooded soils are poorly understood but are of great concern. The identification of the mechanisms responsible for the mobilization and transformation of DPAA may help to develop effective remediation strategies. Here, soil and Fe mineral incubation experiments were carried out to elucidate the partitioning and transformation of DPAA in anoxic (without addition of sulfate or sodium lactate) and sulfide (with the addition of sulfate and sodium lactate) soil and to examine the impact of sulfate and Fe(III) reduction on these processes. Results show that DPAA was more effectively mobilized and thionated in sulfide soil than in anoxic soil. At the initial incubation stages (0-4 weeks), 6.7-74.5% of the total DPAA in sulfide soil was mobilized likely by sorption competition with sodium lactate. At later incubation stage (4-8 weeks), DPAA was almost completely released into the solution likely due to the near-complete Fe(III) reduction. Scanning transmission X-ray microscopy (STXM) results provide further direct evidence of elevated DPAA release coupled with Fe(III) reduction in sulfide environments. The total DPAA fraction decreased significantly to 24.5% after twoweeks and reached 3.4% after eightweeks in sulfide soil, whereas no obvious elimination of DPAA occurred in anoxic soil at the initial two weeks and the total DPAA fraction decreased to 10.9% after eight weeks. This can be explained in part by the enhanced mobilization of DPAA and sulfate reduction in sulfide soil compared with anoxic soil. These results suggest that under flooded soil conditions, Fe(III) and sulfate reduction significantly promote DPAA mobilization and thionation, respectively, and we suggest that it is essential to consider both sulfate and Fe( III) reduction to further our understanding of the environmental fate of DPAA. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000382269000153
ISSN号: 0048-9697
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26627
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Solid-solution partitioning and thionation of diphenylarsinic acid in a flooded soil under the impact of sulfate and iron reduction.pdf(1003KB)期刊论文作者接受稿开放获取View Download
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhu, M]'s Articles
[Tu, C]'s Articles
[Hu, XF]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhu, M]‘s Articles
[Tu, C]‘s Articles
[Hu, XF]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Solid-solution partitioning and thionation of diphenylarsinic acid in a flooded soil under the impact of sulfate and iron reduction.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace