Sample Digestion Methods for the Determination of Traces of Precious Metals by Spectrometric Techniques.

BALCERZAK Maria

doi:10.2116/analsci.18.737

Sample Digestion Methods for the Determination of Traces of Precious Metals by Spectrometric Techniques.

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BALCERZAK Maria

Department of Analytical Chemistry, Warsaw University of Technology

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Recent advances in digestion methods used in the analysis of precious metal samples by spectrometric techniques are reviewed. The applicability of a fire assay, a wet acid treatment, chlorination and alkaline oxidizing fusion to a quantitative recovery of metals from various materials is discussed. Data on the precious metal contents obtained by using particular digestion methods as well as UV-VIS spectrophotometry, atomic absorption spectrometry, atomic emission spectrometry and inductively coupled plasma mass spectrometry in the examination of various samples are tabulated.