METHOD OF QUALITATIVE AND QUANTITATIVE DETERMINATION OF ORGANIC COMPOUNDS OF NOBLE METALS IN ROCKS OF VARIOUS COMPOSITIONS Russian patent published in 2009 - IPC G01N30/06 

FIELD: chemistry.

SUBSTANCE: present invention can be used in qualitative and quantitative determination of the content of organic compounds of Au, Pt and Pd in rocks of various compositions and concentrated in their organic components. According to the invention, the method involves preparation of a sample of test material, mixing the sample with litharge, fire assay of the sample in a mixture with litharge, dissolving the obtained prill in nitrohydrochloric acid and atomic absorption analysis of the acidic solution. The method is distinguished by that, before mixing the sample with litharge, the sample is mixed with Na or K chloride in ratio of 5% sample to 95% Na or K chloride. Traditional sample preparation methods, where the sample is broken up and dissolved into a solution, lead to loss of the main part of the analysed Au, Pt and Pd, which is in form of organic compounds.

EFFECT: maximum retention of analysed components.

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