Abstract
This review is devoted to the physicochemical fundamentals and analytical practice of the use of fluorine oxidants in the decomposition of various naturally occurring and in-process materials containing noble metals. The experience in the application of halogen fluorides, xenon fluorides, and potassium tetrafluorobromate to the analysis and certification of the most difficult to decompose samples with the total precious metal contents from clarke values to 100% was summarized. The advantages of fluoride analytical procedures over traditional methods were demonstrated by examples of the most refractory test samples.
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