PEDOGENESIS OF LATERITIC SOILS AND THE ENRICHMENT OF CRITICAL METALS: A STUDY FROM SOUTHEAST SULAWESI, INDONESIA

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.17794/rgn.2023.2.6

K. Ibrahim, S. Bijaksana, Ulvienin Harlianti, Putu Billy Suryanata, L. Ngkoimani, S. Asfar, S. J. Fajar

引用次数: 0

Abstract

Lateritic soil is a prospective source of metals termed critical or strategic metals due to their use in high-technology industries. Critical metals include rare earth elements (REEs). In this study, two profiles of lateritic outcrops from the Ni-producing area of Southeast Sulawesi in Indonesia were sampled for magnetic susceptibility as well µ-XRF analyses to identify how the concentration of critical metals changed during pedogenesis. The results show that there are three different patterns from the bottom layer up. The first pattern is enrichment experienced by Sc, La, Cr, and Ti. The second pattern is depletion experienced by Ni, Nd, and Ho. The third pattern is the localization of high concentration at a certain depth, as experienced by Co, Ce, and V. The concentration of certain critical metals correlates either positively or negatively with magnetic susceptibility, inferring that magnetic susceptibility might be used as a proxy indicator for critical metal concentration in lateritic soil.

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红土土的成土作用与关键金属的富集:来自印度尼西亚苏拉威西岛东南部的研究

红土是一种被称为关键或战略金属的金属的潜在来源，因为它们在高科技工业中被使用。关键金属包括稀土元素(ree)。在这项研究中，对印度尼西亚苏拉威西岛东南部镍产地的红土露头的两个剖面进行了磁化率和微x射线分析，以确定在成土过程中关键金属的浓度是如何变化的。结果表明，从底层向上有三种不同的模式。第一种模式是Sc、La、Cr和Ti的富集。第二种模式是Ni、Nd和Ho的耗竭。第三种模式是高浓度在一定深度的局部化，如Co、Ce和v。某些临界金属的浓度与磁化率呈正相关或负相关，推断磁化率可以作为红土中临界金属浓度的代理指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.