Solid-Phase Extraction and Determination of Precious Metals

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Processing and Extractive Metallurgy".

Deadline for manuscript submissions: closed (17 September 2021) | Viewed by 2517

Special Issue Editors


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Guest Editor
School of Non-Ferrous Metals and Material Science, Siberian Federal University, 660041 Krasnoyarsk, Russia
Interests: synthesis of adsorbents; solid-phase extraction; separation and preconcentration of precious metals

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Co-Guest Editor
Scientific Research Engineering Center “Kristall”, Siberian Federal University, 660041 Krasnoyarsk, Russia
Interests: solid-phase extraction; chemically modified silicas; ICP-OES; element speciation

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Co-Guest Editor
School of Non-Ferrous Metals and Material Science, Siberian Federal University, 660041 Krasnoyarsk, Russia
Interests: biosorption; precious metals; solid-phase extraction; ICP-OES

Special Issue Information

Dear Colleagues,

Due to their unique chemical and physicochemical properties, precious metals are widely used in various fields of science and technology. In nature, precious metals are found in low concentrations and are accompanied by predominant amounts of background elements. Solid-phase extraction is the most effective and widely used method of preconcentration. It allows one to isolate trace analytes from bulk solutions on a relatively low-weight adsorbent without additional chemical treatment of the solutions.

This Special Issue aims to publish papers on new adsorbents and approaches for preconcentration, separation and subsequent determination of precious metals and their species in samples of various composition using various methods of analysis, sensors and test systems, as well as works aimed at solving the main problems of solid-phase extraction of precious metals: separation of a group of precious metals from the prevailing amounts of related elements; separation of platinum metal ions that are kinetically labile in the reactions of ligand substitution from kinetically inert ones; separation of platinum metals with similar chemical properties. Papers on the combination of methods for the decomposition of mineral raw materials, solid-phase extraction and subsequent off-line or on-line determination are also welcome.

Prof. Dr. Vladimir N. Losev
Dr. Elena Borodina
Dr. Olga Buyko
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • solid-phase extraction
  • precious metals
  • separation and preconcentration
  • adsorbents

Published Papers (1 paper)

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Research

15 pages, 2661 KiB  
Article
Silicas Chemically Modified with Sulfur-Containing Groups for Separation and Preconcentration of Precious Metals Followed by Spectrometric Determination
by Vladimir Losev, Evgeney Elsuf’ev, Elena Borodina, Olga Buyko, Natalya Maznyak and Anatoliy Trofimchuk
Minerals 2021, 11(5), 481; https://doi.org/10.3390/min11050481 - 30 Apr 2021
Cited by 4 | Viewed by 2089
Abstract
Silicas chemically modified with a number of sulfur-containing groups (mercaptopropyl, mercaptophenyl, dipropyl disulfide, thiadiazole thiol, dithiocarbamate and thiourea derivatives) were proposed for the separation and preconcentration of precious metals. These adsorbents quantitatively extracted precious metals from 0.5 to 4 M solutions of hydrochloric [...] Read more.
Silicas chemically modified with a number of sulfur-containing groups (mercaptopropyl, mercaptophenyl, dipropyl disulfide, thiadiazole thiol, dithiocarbamate and thiourea derivatives) were proposed for the separation and preconcentration of precious metals. These adsorbents quantitatively extracted precious metals from 0.5 to 4 M solutions of hydrochloric acid. It allowed their separation from high concentrations of non-ferrous, alkaline earth, alkali and some other related metals. The selectivity of separation of kinetically labile precious metal ions in ligand substitution reactions from kinetically inert ones depended on the nature of sulfur atom within the functional group of adsorbents and increased when passing from thione to thiol sulfur. Approaches for the preconcentration of precious metals using silicas chemically modified with sulfur-containing groups prior to their AAS, ICP-OES, and ICP-MS determination in ores, concentrates and their processing products were proposed. The correctness of the developed methods was confirmed by the analysis of certified reference materials. Full article
(This article belongs to the Special Issue Solid-Phase Extraction and Determination of Precious Metals)
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