Speciation and sorption structure of diphenylarsinic acid in soil clay mineral fractions using sequential extraction and EXAFS spectroscopy
Zhu, M; Hu, XF; Tu, C; Luo, YM; Yang, RY; Zhou, SB; Cheng, NN; Rylott, EL
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
2020-02
Volume20Issue:2Pages:763-774
KeywordDiphenylarsinic acid (DPAA) EXAFS Sequential extraction Speciation Sorption structure
MOST Discipline CatalogueEnvironmental Sciences ; Soil Science
DOI10.1007/s11368-019-02431-2
Contribution Rank[Zhu, Meng; Yang, Ruy; Zhou, Shoubiao; Cheng, Nannan] Anhui Normal Univ, Coll Environm Sci & Engn, Wuhu 241002, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China; [Zhu, Meng; Hu, Xuefeng; Tu, Chen; Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Zhu, Meng; Yang, Ruy; Zhou, Shoubiao] Anhui Normal Univ, Anhui Prov Engn Lab Water & Soil Pollut Control &, Wuhu 241002, Peoples R China; [Rylott, Elizabeth L.] Univ York, Dept Biol, Ctr Novel Agr Prod, York YO10 5DD, N Yorkshire, England
Department海岸带环境过程实验室
AbstractPurpose The mobility of arsenic (As) in soils is fundamentally affected by the clay mineral fraction and its composition. Diphenylarsinic acid (DPAA) is an organoarsenic contaminant derived from chemical warfare agents. Understanding how DPAA interacts with soil clay mineral fractions will enhance understanding of the mobility and transformation of DPAA in the soil-water environment. The objective of this study was to investigate the speciation and sorption structure of DPAA in the clay mineral fractions. Materials and methods Twelve soils were collected from nine Chinese cities which known as chemical weapons burial sites and artificially contaminated with DPAA. A sequential extraction procedure (SEP) was employed to elucidate the speciation of DPAA in the clay mineral fractions of soils. Pearson's correlation analysis was used to derive the relationship between DPAA sorption and the selected physicochemical properties of the clay mineral fractions. Extended X-ray absorption fine structure (EXAFS) L-III-edge As was measured using the beamline BL14W1 at Shanghai Synchrotron Radiation Facility (SSRF) to identify the coordination environment of DPAA in clay mineral fractions. Results and discussion The SEP results showed that DPAA predominantly existed as specifically fraction (18.3-52.8%). A considerable amount of DPAA was also released from non-specifically fraction (8.2-46.7%) and the dissolution of amorphous, poorly crystalline, and well-crystallized Fe/Al (hydr)oxides (20.1-46.2%). A combination of Pearson's correlation analysis and SEP study demonstrated that amorphous and poorly crystalline Fe (hydr)oxides contributed most to DPAA sorption in the clay mineral fractions of soils. The EXAFS results further demonstrated that DPAA formed inner-sphere complexes on Fe (hydr)oxides, with As-Fe distances of 3.18-3.25 angstrom. It is likely that the steric hindrance caused by phenyl substitution and hence the instability of DPAA/Fe complexes explain why a substantial amount of DPAA presented as weakly bound forms. Conclusions DPAA in clay mineral fractions predominantly existed as specifically, amorphous, poorly crystalline, and crystallized Fe/Al (hydr)oxides associated fractions. Amorphous/poorly crystalline Fe rather than total Fe contributed more to DPAA sorption and DPAA formed inner-sphere complexes on Fe (hydr)oxides.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordP-ARSANILIC ACID ; CONTAMINATED SOILS ; ARSENIC BIOACCESSIBILITY ; ATR-FTIR ; IRON (OXYHYDR)OXIDES ; SURFACE COMPLEXATION ; ADSORPTION ; DESORPTION ; MOBILITY ; BIOAVAILABILITY
WOS Research AreaEnvironmental Sciences ; Soil Science
WOS IDWOS:000513281900017
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24760
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
Affiliation1.Anhui Normal Univ, Coll Environm Sci & Engn, Wuhu 241002, Peoples R China;
2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China;
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China;
4.Anhui Normal Univ, Anhui Prov Engn Lab Water & Soil Pollut Control &, Wuhu 241002, Peoples R China;
5.Univ York, Dept Biol, Ctr Novel Agr Prod, York YO10 5DD, N Yorkshire, England
Recommended Citation
GB/T 7714
Zhu, M,Hu, XF,Tu, C,et al. Speciation and sorption structure of diphenylarsinic acid in soil clay mineral fractions using sequential extraction and EXAFS spectroscopy[J]. JOURNAL OF SOILS AND SEDIMENTS,2020,20(2):763-774.
APA Zhu, M.,Hu, XF.,Tu, C.,Luo, YM.,Yang, RY.,...&Rylott, EL.(2020).Speciation and sorption structure of diphenylarsinic acid in soil clay mineral fractions using sequential extraction and EXAFS spectroscopy.JOURNAL OF SOILS AND SEDIMENTS,20(2),763-774.
MLA Zhu, M,et al."Speciation and sorption structure of diphenylarsinic acid in soil clay mineral fractions using sequential extraction and EXAFS spectroscopy".JOURNAL OF SOILS AND SEDIMENTS 20.2(2020):763-774.
Files in This Item: Download All
File Name/Size DocType Version Access License
Speciation and sorpt(792KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhu, M]'s Articles
[Hu, XF]'s Articles
[Tu, C]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhu, M]'s Articles
[Hu, XF]'s Articles
[Tu, C]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhu, M]'s Articles
[Hu, XF]'s Articles
[Tu, C]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Speciation and sorption structure of diphenylarsinic acid in soil clay mineral fractions using sequential extraction and EXAFS spectroscopy.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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