CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Insights into the Formation Process and Environmental Fingerprints of Iron-Manganese Nodules in Subtropical Soils of China
Yu, XL; Fu, YN; Brookes, PC; Lu, SG; Lu, SG (reprint author), Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China.
2015
Source PublicationSOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN0361-5995
Volume79Issue:4Pages:1101—1114
Subtype期刊文献
AbstractIn this work, we collected different size Fe-Mn nodules from a Plinthudult in the subtropical region of China and studied their internal structure and the distribution of trace elements by three synchrotron-based X-ray microprobe techniques: X-ray micro-computed tomography (SR-mCT), X-ray micro-fluorescence (mu-XRF), and micro X-ray absorption near edge structures (mu-XANES). The SR-mCT images reveal that the large nodules (2-3, 3-5, and 5-8 mm in diameter) have distinct Fe and Mn concentric ring structure, while the small nodule (1-2 mm) exhibits a homogeneous fabric. The mu-XRF maps show that Mn is concentrated near the nucleus of the nodule, while Fe is more concentrated in the exterior of the nodule. The 1- to 2-mm nodule has significantly higher total porosity than the >2-mm nodules; however, the spatial distribution of pores within the nodules indicates that the >2-mm nodules have smaller >30-mm pores and show more anisotropy in the outer part than in the inner part. The porosity and pore anisotropy of the nodules were considered to affect the size and shape of Fe-Mn nodules in soil. Quantification of the ring structure for the 3- to 5-mu m nodule reconstructed the formation process of the nodule, showing that the nodule was formed through two growth stages, with each stage consisting of two and five redox processes. The internal structure of Fe-Mn nodules not only records pedo-environmental changes during the formation process but also provides ample opportunity for the adsorption and sequestration of trace elements from the soil.
KeywordFe-mn Nodules Trace-element Associations Ferromanganese Nodules Computed-tomography Selective Dissolution Carpathian Foothills Xanes Spectroscopy Concretions Oxides Accumulation
Language英语
WOS IDWOS:000361048300010
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24966
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorLu, SG (reprint author), Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China.
Recommended Citation
GB/T 7714
Yu, XL,Fu, YN,Brookes, PC,et al. Insights into the Formation Process and Environmental Fingerprints of Iron-Manganese Nodules in Subtropical Soils of China[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2015,79(4):1101—1114.
APA Yu, XL,Fu, YN,Brookes, PC,Lu, SG,&Lu, SG .(2015).Insights into the Formation Process and Environmental Fingerprints of Iron-Manganese Nodules in Subtropical Soils of China.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,79(4),1101—1114.
MLA Yu, XL,et al."Insights into the Formation Process and Environmental Fingerprints of Iron-Manganese Nodules in Subtropical Soils of China".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 79.4(2015):1101—1114.
Files in This Item: Download All
File Name/Size DocType Version Access License
Insights into the Fo(12552KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yu, XL]'s Articles
[Fu, YN]'s Articles
[Brookes, PC]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yu, XL]'s Articles
[Fu, YN]'s Articles
[Brookes, PC]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yu, XL]'s Articles
[Fu, YN]'s Articles
[Brookes, PC]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Insights into the Formation Process and Environmental Fingerprints of Iron-Manganese Nodules in Subtropical Soils of China.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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