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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Detalles Bibliográficos
Autores principales: Maksimova, Yulia A., Dubenskiy, Alexander S., Pavlova, Lyudmila A., Shigapov, Ilya V., Korshunov, Dmitry M., Seregina, Irina F., Davankov, Vadim A., Bolshov, Mikhail A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9570722/
https://www.ncbi.nlm.nih.gov/pubmed/36235280
http://dx.doi.org/10.3390/molecules27196746
Descripción
Sumario: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.

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