Effect of Al Substitution on Visible Short-Wave Infrared Reflectance Spectroscopy (VSWIR) of Goethite and Ferrihydrite
文献类型：期刊论文
| 作者 | Chen, Keyan1,2,3; Qin, Xiaorong1,2,3; Zhou, Jingwen1,2,3; Tan, Wei2,3; Liang, Xiaoliang2,3 ; He, Hongping1,2,3; Zhu, Jianxi2,3; Han, Mengqi1,2,3; Luo, Lianying1,2,3
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| 刊名 | MINERALS
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 14期号:6页码:18 |
| 关键词 | goethite ferrihydrite Al substitution VSWIR parameter |
| DOI | 10.3390/min14060618 |
| 英文摘要 | Goethite and ferrihydrite are the two major iron hydroxides, essential mineral constituents in the terrestrial surface system. Aluminum (Al) is the most common substituent in iron hydroxides, and it may significantly change the bulk and surficial physicochemical properties of iron hydroxides. Consequently, a practical and convenient approach is needed to efficiently identify the Al substitution degrees of iron hydroxides in natural occurrences. This study presents a comprehensive investigation of the VSWIR characteristics of laboratory-synthesized Al-substituted goethite and ferrihydrite, to establish diagnostic VSWIR parameters for the identification and quantification of Al substitution levels in iron hydroxides. The findings revealed that Al substitution can affect the band positions (P) of goethite and ferrihydrite at similar to 650 nm, similar to 900 nm, and similar to 1400 nm. The relationships between the Al substitution of ferrihydrite and VSWIR parameters can be expressed as P900 = -0.43 x Al(%) + 931 and P1400 = -0.07 x Al(%) + 1428, while that of goethite can be expressed as P650 = 0.42 x Al(%) + 657 and P900 = 2.29 x Al(%) + 936. The peak fitting results showed that the absorption intensity at 480-550 nm linearly decreases with increased Al substitution. The obtained VSWIR spectra of Al-substituted goethite and ferrihydrite provide a critical supplement to the spectral library for (Al) iron hydroxides, and these VSWIR parameters can be utilized for the semi-quantitative determination of Al substitution in natural iron hydroxides |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001257530000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78333]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Tan, Wei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Keyan,Qin, Xiaorong,Zhou, Jingwen,et al. Effect of Al Substitution on Visible Short-Wave Infrared Reflectance Spectroscopy (VSWIR) of Goethite and Ferrihydrite[J]. MINERALS,2024,14(6):18. |
| APA | Chen, Keyan.,Qin, Xiaorong.,Zhou, Jingwen.,Tan, Wei.,Liang, Xiaoliang.,...&Luo, Lianying.(2024).Effect of Al Substitution on Visible Short-Wave Infrared Reflectance Spectroscopy (VSWIR) of Goethite and Ferrihydrite.MINERALS,14(6),18. |
| MLA | Chen, Keyan,et al."Effect of Al Substitution on Visible Short-Wave Infrared Reflectance Spectroscopy (VSWIR) of Goethite and Ferrihydrite".MINERALS 14.6(2024):18. |
入库方式： OAI收割
来源：广州地球化学研究所
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