Reversible Sorptive Preconcentration of Noble Metals Followed by FI-ICP-MS Determination

Yulia A Maksimova; Alexander S Dubenskiy; Lyudmila A Pavlova; Ilya V Shigapov; Dmitry M Korshunov; Irina F Seregina; Vadim A Davankov; Mikhail A Bolshov

doi:10.3390/molecules27196746

Reversible Sorptive Preconcentration of Noble Metals Followed by FI-ICP-MS Determination

Molecules. 2022 Oct 10;27(19):6746. doi: 10.3390/molecules27196746.

Authors

Yulia A Maksimova^{1

2}, Alexander S Dubenskiy^{1

2}, Lyudmila A Pavlova³, Ilya V Shigapov^{1

2}, Dmitry M Korshunov², Irina F Seregina¹, Vadim A Davankov³, Mikhail A Bolshov^{1

4}

Affiliations

¹ Chemistry Department, Analytical Chemistry Division, Lomonosov Moscow State University, 1-3 Leninskie Gory, 119991 Moscow, Russia.
² Geological Institute of the Russian Academy of Sciences, Pyzhevsky lane 7, 119017 Moscow, Russia.
³ A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, 119991 Moscow, Russia.
⁴ Institute for Spectroscopy, Russian Academy of Sciences, 5 Fizicheskaya Street, Troitsk, 142190 Moscow, Russia.

Abstract

In this paper, we propose the combined procedure of noble metal (NM) determination, including fire assay, acid digestion, and reversible dynamic sorptive preconcentration, followed by flow-injection ICP-MS. Reversible preconcentration of all NMs was carried out using micro-column packed new PVBC-VP sorbent and elution with a mixture of thiourea, potassium thiocyanate, and HCl, which recovers Pd, Ir, Pt, and Au by 95% and Ru, and Rh by 90%. The proposed procedure was approved using certified reference materials.

Keywords: ICP-MS; noble metals; sorption.

MeSH terms

Metals*
Spectrum Analysis
Thiourea*

Substances

Metals
Thiourea

Grants and funding

20-03-00354 A/Russian Foundation for Basic Research