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

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...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-10, Vol.27 (19), p.6746
Main Authors: Maksimova, Yulia A, Dubenskiy, Alexander S, Pavlova, Lyudmila A, Shigapov, Ilya V, Korshunov, Dmitry M, Seregina, Irina F, Davankov, Vadim A, Bolshov, Mikhail A
Format: Article
Language:English
Subjects:
Acid digestion
Chemical properties
Evaluation
Geology
Gold
ICP-MS
Inductively coupled plasma mass spectrometry
Metals
Methods
Nitrogen
Noble metals
Palladium
Polymers
Potassium
Precious metals
Resins
Sorbents
sorption
Thiocyanates
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Summary: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.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27196746