Silicas Chemically Modified with Sulfur-Containing Groups for Separation and Preconcentration of Precious Metals Followed by Spectrometric Determination : научное издание | Научно-инновационный портал СФУ

Silicas Chemically Modified with Sulfur-Containing Groups for Separation and Preconcentration of Precious Metals Followed by Spectrometric Determination : научное издание

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.3390/min11050481

Ключевые слова: chemically modified silicas, sulfur-containing groups, precious metals, separation, preconcentration, determination, aas, icp-oes, icp-ms

Аннотация: 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.

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Издание

Журнал: MINERALS

Выпуск журнала: Vol. 11, Is. 5

Номера страниц: 481

ISSN журнала: 2075163X

Место издания: BASEL

Издатель: MDPI

Авторы

  • Losev Vladimir (Siberian Fed Univ, Sci Res Engn Ctr Kristall, Krasnoyarsk 660041, Russia)
  • Elsuf'ev Evgeney (Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, Inst Chem & Chem Technol SB RAS, Krasnoyarsk 660036, Russia)
  • Borodina Elena (Siberian Fed Univ, Sci Res Engn Ctr Kristall, Krasnoyarsk 660041, Russia)
  • Buyko Olga (Siberian Fed Univ, Sci Res Engn Ctr Kristall, Krasnoyarsk 660041, Russia)
  • Maznyak Natalya (Siberian Fed Univ, Sci Res Engn Ctr Kristall, Krasnoyarsk 660041, Russia)
  • Trofimchuk Anatoliy (Taras Shevchenko Natl Univ Kyiv, Dept Inorgan Chem, UA-01033 Kiev, Ukraine)

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