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metals--rare-earth
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Developing potentiometric sensors for scandium
, Article Sensors and Actuators B: Chemical ; Volume 348 , 2021 ; 09254005 (ISSN) ; Legin, E ; Legin, A ; Yaghmaei, S ; Nechaev, A ; Babain, V ; Kirsanov, D ; Sharif University of Technology
Elsevier B.V
2021
Abstract
Scandium is a rare earth element that is not very abundant on Earth, however in recent years due to the employment of scandium in various high-tech fields the interest in the analytical chemistry of this metal is growing. Currently, the methods for scandium quantification are mainly based on inductively coupled plasma atomic emission and mass-spectrometry and to the best of our knowledge no potentiometric sensors for scandium detection were reported so far. This study is devoted to the development of simple and cost-effective ion-selective sensors for quantification of Sc3+ in aqueous media. Employing the variety of lipophilic ligands suggested in liquid extraction for separation of...
Geochemical characteristics of rare earth elements in different types of soil: a chemometric approach
, Article Chemosphere ; Volume 184 , 2017 , Pages 673-678 ; 00456535 (ISSN) ; Behkami, S ; Yusoff, I ; Md Zain, S. B ; Bakar, N. K. A ; Bakar, A. F. A ; Alias, Y ; Sharif University of Technology
Abstract
Rare earth elements (REEs) are becoming significant due to their huge applications in many industries, large-scale mining and refining activities. Increasing usage of such metals pose negative environmental impacts. In this research ICP-MS has been used to analyze soil samples collected from former ex-mining areas in the depths of 0–20 cm, 21–40 cm, and 41–60 cm of residential, mining, natural, and industrial areas of Perak. Principal component analysis (PCA) revealed that soil samples taken from different mining, industrial, residential, and natural areas are separated into four clusters. It was observed that REEs were abundant in most of the samples from mining areas. Concentration of the...