Decomposition and Preconcentration Methods for the Determination of Pt, Pd, Re in Mineral Raw Materials

Abstract

Nowadays the actual problem of geochemistry is a deep and complex processing of mineral raw materials. Data on the quantitative content of precious and rare metals in various types of ores and rocks are necessary. It stimulates the development and improvement of chemical analytical methods for determination of these elements. Such methods are not applicable without sample preparation stage. Preparation of samples for analysis is the decomposition and preconcentration of rare and precious metals from matrix of mineral raw materials. The sample preparation schemes of platinum, palladium and rhenium are described in this paper.

Determination of Au, Pt, Pd in gold ore mineral raw materials by stripping voltammetry

“…Extraction of gold ions (III) from the sample matrix was carried out by means of extraction of diethyl ether [11]. Palladium was extracted from a specimen by chloroform by use of extraction of dythemil-glyoxysome complex [3,12]. The separation of the sample matrix from platinum ions was performed by means of hydrolysis method by treating the sample with 3% NaOH solution [13].…”

“…Identification of new raw material sources and reliability of estimation of gold, platinum and palladium reserves are closely related to degree of sensitiveness and accuracy of analytical methods as well as to economic indicators of their implementation. State of analytical chemistry of precious metals is reflected in reviews [1][2][3][4][5][6]. It is noted in these papers that extremely underdeveloped basis of analytical methods of quantitative evaluation of potential platinoid natural sources is the greatest obstacle of their research.…”

Investigation of the Influence of Matrix Components of Gold Mineral Resources on the Electrochemical Determination of Pt and Re

“…Previously, the authors have developed a suitable sample preparation scheme [3]. The stage of [4] dissolution, decomposition, dry and wet ashing, extraction, adsorption and distillation were selected and optimized.…”