Reversible Sorptive Preconcentration of Noble Metals Followed by FI-ICP-MS Determination.
Yulia A MaksimovaAlexander S DubenskiyLyudmila A PavlovaIlya V ShigapovDmitry M KorshunovIrina F SereginaVadim A DavankovMikhail A BolshovPublished in: Molecules (Basel, Switzerland) (2022)
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.
Keyphrases
- solid phase extraction
- high performance liquid chromatography
- gas chromatography mass spectrometry
- mass spectrometry
- molecularly imprinted
- liquid chromatography
- tandem mass spectrometry
- simultaneous determination
- multiple sclerosis
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- reduced graphene oxide
- sensitive detection
- ultrasound guided
- risk assessment
- anaerobic digestion
- drug administration
- metal organic framework