Au and PGE Determination in Geochemical Materials: Experience in Applying Spectrometric Techniques.

The paper systematizes methods used to determine trace concentrations (1n to 1000n ppb) of PGE and Au in geochemical materials. The methods involve various techniques of sample preparation for analysis and instrumental determination of elements. Each of the methods is briefly characterized, and the analytical possibilities of the application of the suggested approaches in solving various fundamental and applied geochemical problems are illustrated. [ABSTRACT FROM AUTHOR]