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DOI	10.1016/j.mex.2021.101248
	Analysis iron distribution methods in fine sand- and silt-sized soil particles
	He, Tong; Li, Juan; Gray, Jessica; Gu, Ying
通讯作者	He, T (corresponding author), Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing, Peoples R China.
来源期刊	METHODSX
EISSN	2215-0161
出版年	2021
卷号	8
英文摘要	Iron is prone to change its form and speciation in phases. Thus, several methods have been developed to estimate iron partitioning in the mineral phases of soils. However, the accuracy of these methods to evaluate the iron contribution from minor phases, such as actinolite, almandine, biotite, chlorite, epidote, hornblende, muscovite, and Fe-diospide, remains low. Furthermore, most of the current iron speciation research is focused on bulk samples, and only applies to soil samples that are mostly composed of clays or clay minerals, without a wideranging evaluation of soil particles with different grain sizes. In this study, we classified several iron phases using a mineral liberation analyzer on desert soil particles with diameters ranging from silt- to fine-sand (5-20 mu m, 20-45 mu m, 45-63 mu m, 63-75 mu m, and > 75 mu m). The iron containing minor phases were identified, the modal mineral abundances were determined via matching with the standard energy dispersive spectra library, and a particle size analysis was performed using mineral processing tools on each of the examined 40,000 particles. The iron partition results were ultimately established based on the standard iron concentration in the mineral phases and the modal mineral abundances. This new method could be automated, thereby facilitating high efficiency identification of iron-containing phases that would allow, for the first time, the generation of a dataset for iron partitioning in soil particles. This method allows the identification of minor iron phases in soil particles, and permits in situ mapping of iron mineralogy in fine sand- to silt-sized soil particles. Not restricted by single mineral particles, this method considers multi-phase complex particles. Thus, it largely improves the accuracy for estimating the iron partition parameter. (C) 2021 Published by Elsevier B.V.
英文关键词	Lithogenic particles Iron partition in silicate phases Single-particle mapping technique Iron provenance
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	ESCI
WOS记录号	WOS:000707186000018
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	南京大学 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364165
作者单位	[He, Tong] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing, Peoples R China; [Li, Juan] Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Peoples R China; [Gray, Jessica; Gu, Ying] Univ Queensland, Julius Kruttschnitt Mineral Res Ctr, Brisbane, Qld, Australia
推荐引用方式 GB/T 7714	He, Tong,Li, Juan,Gray, Jessica,et al. Analysis iron distribution methods in fine sand- and silt-sized soil particles[J]. 南京大学, 南京信息工程大学,2021,8.
APA	He, Tong,Li, Juan,Gray, Jessica,&Gu, Ying.(2021).Analysis iron distribution methods in fine sand- and silt-sized soil particles.METHODSX,8.
MLA	He, Tong,et al."Analysis iron distribution methods in fine sand- and silt-sized soil particles".METHODSX 8(2021).