A new combined ETAAS method for the determination of platinum, palladium, and gold traces in natural samples |
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| Authors: | O B Mokhodoeva A V Nikulin G V Myasoedova I V Kubrakova |
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| Institution: | 1. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 119991, Russia
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| Abstract: | A new combined method is developed for determining trace platinum, palladium, and gold in natural materials of complex composition. The method involves sorption preconcentration with solid-phase extractants obtained by impregnating polymer supports (hypercrosslinked and highly crosslinked polystyrene resins) with an imidazolium ionic liquid (1-hexadecyl-3-methylimidazolium bromide), elution with acetone under normal conditions or with a solution of thiourea in 1 M HCl under microwave heating, and the ETAAS determination of analytes in the eluate. The efficiency of the method is confirmed by the analysis of various ores and rocks. |
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