Chemistry Department, Analytical Chemistry Division, Lomonosov Moscow State University, 1-3 Leninskie Gory, 119991 Moscow, Russia.
Geological Institute of the Russian Academy of Sciences, Pyzhevsky lane 7, 119017 Moscow, Russia.
Molecules. 2022 Oct 10;27(19):6746. doi: 10.3390/molecules27196746.
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.
在本文中，我们提出了一种联合程序，用于贵金属（NM）的测定，包括火试金、酸消解和可逆动态吸附预浓缩，然后进行流动注射 ICP-MS 分析。使用新型 PVBC-VP 微柱填充吸附剂进行所有 NM 的可逆预浓缩，并使用硫脲、硫氰酸钾和 HCl 的混合物进行洗脱，可以 95%回收 Pd、Ir、Pt 和 Au，90%回收 Ru 和 Rh。该方法已使用认证参考物质进行了验证。
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