Abstract
The paper considers the possibilities of use of the method of stripping voltammetry for finding platinum metals in mineral gold and ore raw material. A review of new options of electro-concentration of platinum metals on the surface of graphite electrode with the following sediment electro-oxidation and receipt of an analytical signal is presented: platinum finding was carried out by picks of selective electro-oxidation of iridium from intermetallic compound with platinum; gold finding was carried out by picks of gold electro-oxidation on the surface of graphite electrode modified by bismuth; palladium finding was performed by picks of palladium electro-oxidation on the surface of graphite electrode. 1M HCL solution was selected as a supporting electrolyte. Gold and hydrogen elimination on the process of palladium electro-oxidation was performed by means of UV irradiation of solution in the process of electro-concentration of palladium sediment. Gold, platinum and palladium determination was carried out in mineral gold and ore raw material of Verkhneamylskiy gold and ore district.
Highlights
Despite extremely low content of precious metals in natural site, big investments are made in exploration of new gold and ore fields
The purpose of this work is to estimate the content of gold, platinum and palladium in gold and ore raw material using the method of stripping voltammetry
25 specimens of rocks from the right side of the river Izinzyul of Verkhneamylskiy gold and ore district were selected as objects of testing for Pd, Pt, and Au
Summary
Despite extremely low content of precious metals in natural site, big investments are made in exploration of new gold and ore fields. Content of platinum metals in industrial raw material fluctuates from 0.1 mg/t up to 50.000 mg/t To determine such low contents of platinum methods, highly instrumental procedures of analysis are required. The method of stripping voltammetry (SV) is proposed hereby as a method of analysis which can be used to determine platinum, palladium and gold in mineral raw material. This method refers to sensitive instrumental procedures of analysis which allows to determine elements after their concentration on the surface of an electrode with the following electro-oxidation of sediment. The purpose of this work is to estimate the content of gold, platinum and palladium in gold and ore raw material using the method of stripping voltammetry
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